Spreading out negative information about bitcoin really will not do so much harm, rather it will help spread the name even further. For something to really gain popularity, it requires both positive and negative news, because truth is some people who always want to be in a position to tell their friends "I told you so" only pay attention to things when the news as regards it is negative.

I see no reason why altcoin users should have anything against bitcoin, because buying/owning btc does not stop or hinder me from doing the same with another altcoin say doge. There's really enough space in the crypto world for any cryptocurrency even apart from Bitcoin, to fly.

Mostly there are always a lot of negative comments or articles about bitcoin when the price is dumping and a lot of good news, when the price is pumping that, is probably what happened most of the time.

IF they are Doge Coin supporters, then let see the one that will be able to stand the tests of time. The one that has real use cases vs the one that is just pumped and dumped. Elon should just respect the crypto market and not makes a mess of it.

They probably are a jealous people or they just find misfortune investing in bitcoin so they try and poison the well and have more people join their side because they want the validation. Your idiom is on point to be honest. I don't get why they do this kind of news, it's too superficial for me if it is for the clout or the attention.

Do they come from the Dogecoin supporters?

Isn't negative news about Bitcoin common?
Even during the first bullish trend in 2017, there was a lot of negative news related to BTC. It is even linked to the issue of terrorism, clashes with religion, fraudulent investments, scams, fraud, and so on. Because it is now familiar or surprised by this. And of course, don't make us drop anymore.

It is because of two ways and this is really not surprising, bitcoin has really so many haters and we cannot deny that thing, a lot of people are still thinking that bitcoin is a scam without knowing the whole thing about it. Those dogecoin supporters are the reason, they just started hating BTC as dogecoin pumps at its current value because of the power of Elon Musk, they are now into dogecoin just because of that thing, bitcoin will still be the one and the safest haven for me.

Bitcoin haters come out immediately after the price starts going down at a high rate. But it's not only them of course. There are many people whose opinions change about Bitcoin very easily depending on its bad and good times.

Typical thing that you can see into this market where those kind of words would really be neither residing with Bitcoin or into alts basing on the current trend that we are seeing.
We know that human being would really be having that common behavior on where they do give out positive words into something which is gaining momentum or simply in a
bullish manner but when things turns out to be a mess or crashing then you would really expect those negative words will just pop out and it isnt surprising.
If you are a type of investor or trader then dont let these words affect you because this would really be messing up into your decisions that you would made.