It biases the first repliers

You can though I like it.

To be fair having replies in order of time sucks.

There is no published science definitively proving that it is harmful or helpful. The effects of this particular legislation, if it is impactful at all, remains to be seen. I’m just offering my opinion based on my personal experiences. I expect it to have some success in reducing acute adolescent mental health issues. If the matter is ever settled through consensus, I’ll defer to that.

Why not just look up how it actually works in the real world instead of hypotheticals

I support this move. Some here are delusionally arguing that this impacts privacy - the sort of data social media firms collect on teenagers is egregiously extensive regardless. This is good support for their mental health and development.