I don’t know anymore, feels like that’s a user-by-user basis. I just moved from Edge to Firefox and it feels exactly as smooth. Perhaps the only time it doesn’t feel as smooth is when I play mahjong on the browser, but other than that, it’s the same exact experience lol.
People usually don’t respond well with threats they don’t perceive as harmful, or can’t perceive physically at all. Targeted ads and privacy in general is abstract to many people, and the only time they’ll start responding is if their emails or social medias get hacked due to their infos being sold on the dark web or something like that.