it is all about different labels...and different labels have different visibility, in terms of effort to get to that information...so I guess by narrowing unflagging privilege to a very small group of users, the mod hopes to make it significantly more difficult for people to advocate a certain post here through purposeful manipulation...thus perhaps “unflagging” capability, as one of the last lines of defense, is only given to a very small group of ultimately verified users, through manual assignment or some thrshold based on percentage rather than an absolute karma value...

that’s my guess...