Thread:KevinVolkov/@comment-44811554-20200106195615/@comment-38078079-20200116111634

I can't speak for staff, but laws seem to dictate all user-data be deleted when a minor is involved, as data on minors cannot be retained (13 for most of the world, 16 for most of the EU). I can only guess that staff mean they can't delete things like contributions and posts etc., which explains why these things remain after an account has been completely disabled, but the account is effectively deleted (no avatars, profiles, cannot be logged in, etc.)

You'd have to ask staff for clarification, though.