Why the negative connotations? The trick to understanding is to get out of the crypto bubble and learn more about what average Americans
think.
Here's a few ideas:
1. The crypto industry spent $millions attaching itself to the, um,
highly controversial figure of Donald Trump. Many here are very enthusiastic about Trump, so they can't possibly understand why that could be a bad thing, but recent polls would indicate they are only among about ~30% of Americans who think this. The rest seem to have this ridiculous idea that Trump is the most corrupt president in US history, and that crypto is just another scam for him

.
2. The crypto community's "extreme libertarianism" can be confused with... moral relativism. In other words, criminals and non-criminals are the same, aggressors like Russia are the same as victims of aggression like Ukraine, etc. It's great, they say, that Bitcoin provides a wonderfully useful product to both criminals and non-criminals alike, terrorists and non-terrorists alike, and so on. That's Bitcoin "doing its job", they say. The problem is, many Americans don't agree that terrorists should be able to have a nice way to move money around without getting caught, so when the community brags about this, they get... confused

.
3. The crypto community supports CZ, but many Americans do not--and this is a very polarizing issue. To some, CZ was the victim of the previous administration's "war on crypto" and he is a totally innocent, upstanding guy. To others, he's a businessman who made his fortune by purposefully supporting terrorists groups like Al Qaeda and ISIS in order to make money. Again, you might be among the many who support CZ, but understand that many Americans have made their mind up about him.
4. The crypto industry is now the #1 political lobby in the USA, surpassing that of Big Oil, Big Pharmaceutical, etc. Many Americans feel very threatened by a gigantic industry like this buying our elections--and they are almost entirely supporting the Republican party, which only roughly half of the USA supports, which means that half of Americans would be rooting for the crypto business to totally fail.
So in summary: crime, association with crime, and indifference to crime and perpetrators of violence. There's obviously a lot more to Bitcoin than all of these things, but the association doesn't wear off very easily...