It gets banned/blocked, or sued for noncompliance for allowing Australian users without age verification. They’ll play whack a mole for decades, just like they have been for P2P file sharing.
Like a lot of post-911 legislation, it’s anti-privacy surveillance disguised as a way to ‘protect the children’. It’s absolute shit and we should absolutely be taking measures to anonymize our open source social media platforms further.
But those reasons aren’t nefarious