I think a "Just A Browser" approach would be better for people like me, who don't really want to patch configuration files for their existing browsers - sounds messy.

I would however download a new browser that promises to not have all these bad features and has stripped them straight from the source code. For example, I switched from Chrome to Brave because it blocks ads.

Vivaldi, Librewolf, Palemoon and Zen Browser (the latter I'm not 100% sure about) have all committed to add no AI features, for some definition of AI.