I also thought about fairness and financial self-sovereignty in the future when reading the Bitcoin Whitepaper, but to be honest, I think the role of BTC has changed now: BTC is not yet a common currency outside of El Salvador. BTC is seen as an asset for accumulation or investment. The biggest value I still see in BTC is that it helps me self-custody the value of my labor without fear of being affected by inflation or government asset freezes.

Some people say that BTC is leading the entire crypto market, but I don't think this is important to me because I don't hold any altcoins

I am also quite concerned about the negative impact of spot BTC ETFs on decentralization, self-custody, and the ongoing financial revolution, but perhaps there is nothing I can do to change the inevitable trend of the financial market, where BTC has become an important part.

The key success behind bitcoin is the technology and the purpose behind its development. It is more futuristic and gives hope to everyone who finds the real goodness in it. Not everyone is aware of it, because people have begun to be part of the bitcoin network for its growth and profit rather than the unique features it holds. When we talk of bitcoin's growth, it always reminds me of Laszlo Hanyecz, the bitcoin pizza guy. Maybe bitcoin couldn't have grown this high in value as well as in terms of popularity. In such a scenario, bitcoin is a beacon of hope for the present and future. This happened through Satoshi and Laszlo Hanyecz.

There are a few problems with this. The extremely poor people don't have access to phones, computers, internet and computer literacy needed to safely use Bitcoin. They also wouldn't be able to afford to pay Bitcoin network fees during times of congestions. And they don't have any money to invest in Bitcoin as a store of value.

Bitcoin gives full control to the owners. The saying “Be your own bank” resonates so well with Bitcoin but some bitcoiners shy away from the responsibility of being their own bank. They use bitcoin wrongly, storing bitcoin in centralized exchanges and choosing wallets that are closed source.

Very true and this is a very important issue and also requires a long time that will never be known for how long, it is true what the OP said, but we also have to think about this issue.
And to use Bitcoin it must be supported by circumstances, facilities, intelligence and also the ability to think to develop and financial capabilities. And these are all very important provisions to have, and many poor people experience problems with all of this, including internet access which still has many problems, especially in remote areas.

Bitcoin holds many opportunities that would be beneficial to individuals, corporate bodies and even nations. Decentralization gives people the freedom to use money the way they want without restrictions placed by the government. It also promotes privacy which enables individuals to hide their financial transactions or worth.

Currently, Bitcoin is used more as an investment than a currency. In most countries where it is popular it is hardly used to pay for goods and services but many people use it as a speculative asset. Although the currency could be bought in bits which gives people the opportunity to buy based on their income many people still cannot afford to buy it. In the future, I also think that it will be difficult for low-income earners to have access to it. So I doubt if Bitcoin will promote an equitable and inclusive financial system.

Bitcoin promotes decentralization but from the way institutional investors are rushing into the sector, centralisation is now becoming the order of the day. Many people are now attracted to investment packages offered by some ETF providers instead of having the keys to their investment. Maybe things will turn out better in the future.

Religious sects are also giving "hope for the future" to their members.
Communism also gave a hope for the future to all socialists/communists, in the form of an egalitarian utopian society, where all needs will be met and there will be no poor people and exploitation.
That's why I'm always skeptical about any ideology or system that gives the people "a hope for the future". Everyone hopes that Bitcoin will hit moon and they will make some easy money, but what happens after Bitcoin hits the moon? Will the price stay on the moon? it will most likely crash and go down. Maybe it's the ups and downs of the BTC price that are giving hope to the traders.
Anyway, I agree with the "be your own bank" principle of BTC, but most Bitcoiners are using centralized crypto exchanges so this seems more like hypocrisy to me.

I have seen quite several people who are relying their faith in financial freedom with gambling, but I haven't seen enough young people who are actually accumulating bitcoin little by little or DCAing. What the young generations were doing was to add hype with shitcoins and scam projects to get rich in a much quicker way. And yeah I am talking about Gen Z people. Though I've seen a few, at least here in my country, but most of them are into alts which will eventually rug pulled on the latter.

for people living in developed areas and have access and both knowledge it is a beacon of hope for them as they will have the ability to save their asset without going through banks and this asset will not be subjected to inflation like the fiat does but aside this people the bitcoin is still like a fairy tale just like how the internet it self has spend years and still people cannot get better off it due to their economical and geological condition. Bitcoin only eases cross boarder transaction and doesn't solve some of the nations economical conditions that we attached to it.