Browsers are currently incentivised to add a bunch of new features outside their traditional role. Some people prefer to keep the browser's role simple. It's not ideological and it's not "hating".

Microsoft and Google I can understand, they have AI products they desperately need to monetize or push to as many users as possible, because management bonuses are tied to CoPilot or Gemini adoption.

I don't see it as hating on AI, just because it's AI. It's not wanting pointless AI features in products that don't need them. I've pretty much disabled anything in the ml namespace in about:config in Firefox, because the features are distracting, but provide absolutely no value to me.

why not? All things being equal non-AI solution is better. "it is current hyped thing" should bring some downward correction

and of all things to hate, AI hate is harmless and at least partially justified