How does this solve the content moderation problem? We’re allowed to upload 18+ content on Twitter. But a nursing parent posting a nipple on Facebook is ground

How does this solve the content moderation problem? We’re allowed to upload 18+ content on Twitter. But a nursing parent posting a nipple on Facebook is grounds for account deletion. Or in another case, what if I block a user on Facebook, but they come through on Twitter? Does interop need to be include verified user identity to prevent abuse?