Binging with Babish - the content just drifted away. He started doing a show with another guy and I just didn't watch those episodes. Then, the content went further and I stopped watching.
Joshua Weissman - he just became insufferable at some point. I liked his older content.
Shadiversity, Sabine Hossenfelder - they have positions that cause hurt to people and that I morally do not agree with and won't give watch time or ad/sub money to. There are probably more here, but I don't recall. They're welcome to their opinions, but I'm not entitled to view them or fund them.
First we Feast - mostly watched it for Hot Ones (the Motz's stuff was fantastic!) but I got tired of Hot Ones, didn't know most of the guests for a long stretch (not living in the US or really consuming US media made me lose track of things). I also kinda got burnt out on the format.
Linus Tech Tips - to me, it just became the arrogant, egotistical Linus show. There was some other stuff that kinda put me off as well. Maybe it's better now, but I haven't watched in a long while at this point.
A number of creators I'm not thinking of - I hate when prescription meds are advertised (which isn't even legal in the vast majority of countries) and how they just want to sell dick pills without a real, non-conflict-of-interest doctor involved when the cause may not even be physical. I worked in healthcare for a long time and that just rubbed me the wrong way, particularly when creators in countries where it would be illegal for them on TV do it (and it may not even be legal/available in their country but it is in the country of at least US-based audience members).
Edit: and the 8-bit guy now, based on others mentioning things, checking other sources, and even checking up a follow-up video he made a year ago. I'll pass.
Oh boy. I do HEMA, and let me tell you, he is not popular among people who actually have any understanding of historical fighting. The guy preaches his own opinion based on vague vibes and what seems right to him, and I think he's even put out some videos saying how HEMA is terrible and wrong. Meanwhile, we read actual historical texts from people who were using these weapons and techniques at a time when it was actively being used, and we regularly train and fight people to prove to ourselves just how effective they are.
And that's without even getting in to the very clear bigotry he demonstrates on his second channel, and which occasionally makes its way subtly into the main channel.
Anyway, as far as bigotry and people interested in swords are concerned, Jill Bearup. I haven't watched her since she did the collab with Tom Scott and as a result her history of transphobia and refusal to denounce those beliefs became more widely known, leading to Tom Scott taking down the collab, and Nebula kicking her off their platform.
You can search for her takes on trans people and that will probably, but basically against basic things like gender-affirming care and positing that trans is a social fad amongst youth.
Have dropped Joshua as well since he turned more and more annoying trying to capitalize on memes.
And Linus... well i think everyone that follows/ed him knows about the gamers nexus incident which was just the tipping point after, as you said, he got more and more arrogant