Such a weird statement. webkit is and has been a fully released browser engine for decades, companies forked from it for licensing and profit, not because it wasnt ready or complete (at the time)
No, its been there for about the same time ios. A few years ago now they changed it so that the permissions are asked for from inside the app (when X is used) instead of when installing if that is what you are thinking about
“Old”. Not sure I would classify anything from this side of 2020 as old tbh
Teenagers? What effing instance are you running on? I mostly see 30+ IT people wherever I go