There is nothing wrong with a long post as long as it's interesting and engaging enough to keep the readers intrigued so that they read it whole. It depends on the writer and his writing skills and also the subject being discussed whether the readers will read the whole wall of texts or skip through it.

Writing skills matter a lot when it comes to this because someone with good writing skills and the ability to construct sentences and paragraphs in a way that would make the reader interested will have all their posts read no matter how long they are.

On the other hand, for someone who doesn't put much effort in their writing or care about things such as sentence structure, vocabulary, punctuation, etc., their write-ups will barely catch any interest from the audience.

The reason why I always prefer watching videos rather than reading long posts is because I find myself sleepy whenever I read long posts or long articles.
10/10 for the OP still though for the effort that he used to create a long post like this but like what others felt, I also felt that I don't need to read that lengthy post. There might be some that are interesting but still, I prefer watching educational videos because I find myself comfortable on it.

Anyway, to answer this question, I will, and I will not let them get involved into Bitcoin... or at least I will not be the reason why they are buying Bitcoin.
I will never introduce to them with Bitcoin. My parents are the type of parents that aren't involved into any types of investments aside from real estate and business, but into other investments like Stock Market, bonds or crypto. They don't even know it or at least they've heard it, but not interested on it at least.

We all have different parents, and it's all up to us if we will guide them with regards to Bitcoin or not. If you felt that they're interested into it, then guide them. Still kudos on the lengthy post you created.

You need to find a way to simplify the meaning you want to convey to parents and if your intention is to provide them with an understanding of Bitcoin then it must be done in a much more binding way. You also have to know the character of your parents and if they are a little unfamiliar with the investment route then what you want to convey will be much more difficult for them to accept. You should also understand their previous work patterns because not everyone will be interested in investing, especially involvement in bitcoin.

If your parents are unfamiliar with technology then they should not be involved in investing. You can ask for funding and manage the investment yourself because if you give them access, it doesn't necessarily mean they can do it. I think you know the character of your parents at home better and you also know what to do when your parents are not close to investment patterns.

You pointed out one of the advantages that a bitcoin ETF gives us, and I also support ETFs because it makes it easier for people to access bitcoin, especially older people like our parents. To be honest, getting into bitcoin is not as easy as many people say, it may be easy for us but for some people it is really a big barrier. Many people are not even confident in using centralized exchanges after being informed about the risks involved, let alone using non-custodial wallets because they are much more complicated. But with the bitcoin ETF, things get a little easier. If someone intends to introduce bitcoin to their parents, we should introduce a more suitable bitcoin ETF.

I don't have lured my parents yet but i did with mybrother and cousin that is they are
now into crypto investment and specifically bitcoin.but my mom is showing interest now that
she keeps asking me how much is the value of bitcoin now and yesterday so maybe in a week
of two? she will finally invest in bitcoin.

Actually at some point I got confused as well because giving out time to read all these lengthy post is energy consuming so I think have to reply with the title instead of reading down the whole contents before I sleep of while reading.
At first getting involving into bitcoin depends on how transparent you are to them why because whatever that involves money comes with trust and not just only the knowledge aspect. If your parents trusted so well about money then it would cost less energy to convince them to invest but if they can't trust you with money then it would take long time to get convinced into whatever thing that concerns online investment where they need to pull out money from their personal account to send to their child account or even having to buy anything with their master credit/debit cards.

Reading isn't bad anyway but it all depends on how you programmed yourself for that particular book you wanna read, let say you can't have things to meet up and expect to finished a whole lot of books without you doing other things just like what op did put down there. Usually it's sucking to see that what he could had just summarized with few words he littered the place with text just explaining how to let our mother and father invest in bitcoin. In fact they no explanation just live by example by showing them you cashed out big time from bitcoin and just tell them how long their investment needs to stay before they could harvest that all, after few moment they would call you to come take and put for them without much hassle.

Its good ideas not advice them investing in bitcoin during most of our parent lack of technology and easily got scam when investing or holding bitcoin assets in mobile phone wallet. I remember with some of parent around my environment their social media account got hack after downloading fake or phising  link, seems easily their bitcoin or altcoin assets gone behind most of them not understand yet with real or trusted site and fake link.

Most of parent actually interested with their investment in land or gold, its keep worth although the increasing price not faster such as bitcoin but don't make them get pressure when investing in bitcoin and get increasing price will get problem or scare their investment assets.
Seems good ideas waiting their assets giving to us and spend it in bitcoin depend allow or not for selling or converting from land assets to bitcoin assets.

Talking about peaceful life, let's not forget one thing: the amount of time left to live they may have. If you're in your 20s and the economy collapses, well, of course it's not a nice situation but even if somehow you lose everything you have, you still have a lot of time to recover. If you lose your retirement funds while you're in your 70s... I don't even want to think about it, you'll have to work till the day you die. Seriously, don't overcomplicate your parents' lives.

I remember my dad always talking about bitcoin back in the day and how it was gonna be the next big thing. Unfortunately i guess he never actually purchased any lol he just talked about it alot. I was young still so i had no idea how to get any but i tried. I just remember signing up for crypto exchanges and being too young to buy damnit! 

Ahhh... I'm feeling sick and dezzyyyy what big stuff OP you've compiled is it your own summary about Bitcoin or just AI-generated content anyway appreciate if you did it by yourself, At the same time here are a few minor suggestions use Glow, and colors, Bold and custom size to make it better in the presentation because like this no one is gonna read it, as I haven't because I cant look for everyone read repeated content add some headings so we can scan through the page and get the desired piece of information which is only possible with the proper formatting and presentation in which you've scored 1/10 in this thread.

Make sure to follow the basics, such as Glow, Colored heading, and Custom sizes for text according to the need.