To play devils advocate there is a direct benefit to being tracked, at least theoretically search and ads will more relevant to you. I get no one wants ads but you do see ads here and there. It would arguably be better for you if everyone of them was relevant than not. Similarly search or even LLM answers could be better if the preferences of the asker are known

No, in not making excuses for tracking and I do lots of stuff myself of avoid being tracked

I’m only responding to the false premise that there are no benefits. There are. You can just choose to believe they aren’t worth the cost. I believe they aren’t but I have friends who opt into all tracking and even register their presence with multiple apps. They believe they’ll make more positive connections