You're not understanding my argument. Within the current way we do things, whatever age you pick is the age the transition period starts for a big fraction of people. Just picking a higher age doesn't work.

If anything, based on the median in the US right now, we should be introducing more self-determination earlier.

Nothing to do with infantilizing anyone.

I’m probably stating the obvious, but some things are complex and don’t have good universal solutions. Which is part of why we have judges and lawyers, not just laws.