That's great in theory, but not everyone (like children and the non-technical) will understand the full implications of what sharing too much information can result in (like identity theft, targeted harassment, stalking, misinformation campaigns, etc). Stopping companies from putting people in a dangerous position is plenty reasonable, and is not some sort of abdication of peoples' personal agency (to be harmed?).

"I should have the right to have my information be n-times-resold to some shady third-party company where it will eventually result in fake student loans being taken out in my name!" - no one, ever.

No one chooses to "productize"/ commodify themselves for the benefit of Meta (as opposed to when people do so for their own benefit, e.g. streamers), but people have been forced to accept being commodified by large companies as a prerequisite to accessing online social spaces, and that's bad.