Allowing identity changes without requiring reverification to keep the "verified" status sounds like a problem with an obvious solution: Require revalidation, or remove the mark.
Having initial validation accessible is not the issue here.
Exactly: I am totally perplexed at all the "see what verifying anyone will result in", instead of "your verification is broken" claims.
It's like allowing verified emails to be changed to another address without reverifying.
I mean, doh.
They then spoof being the real person, and verification then means absolutely nothing cause they are functionally identical to a bypasser.
By having verification be really hard to get, trolls have a lot harder time getting accounts and the problem is smaller in scope.