Nearly every platform has something like EV - anyone can make a username or domain names that sounds official, some mechanism is needed to tie it to a real world identity.

Email/GPG has services like keybase, Instagram has verified accounts, WhatsApp does too. Even bloggers who dislike checking organisations for certs (EV) do so from verified accounts - though Twitter mistakenly tried to tie it to both noteworthiness and ethics, which they're now trying to fix.