I think it's because there's always a group of nosy busybodies finger-wagging about protecting the children and we have to do decorative theatrics to satiate whatever narratives they've convinced themselves of

I bet that the Chat Control lobbyist groups are involved to some degree, as they tried to require age verification in Chat Control before it was shot down. They probably haven't given up after that defeat.

This is a group particularly beloved by politicians, because you can pretty much use them as a smokescreen whenever you want to pass authoritarian legislation...