Other accounts flagging you for not being you, is a very real thing on FB.

I've had relatives loose two account into limbo, because of this and yes - even after being "verified" on one of them.

I guess the logic is that if someone took over your account, so you're no longer you.

Why would that merit a recurring charge? In other words, what ongoing expense is incurred by the company to display a particular icon next to your name?

You'd only be verified as long as you're paying, stop paying and that account is no longer verified.