[BeefWellington]

The Wil Wheaton example is actually something that absolutely could have happened in the IRC days - a big mob flooding another channel to ban user X could lead an oper to decide the same thing (this was in fact the source of much drama back in my EFNet days).

There's nothing stopping a moderator/operator from simply blocking accounts on-instance who are erroneously flagging/reporting people.

There's also nothing stopping Wil Wheaton from finding a more sympathetic server admin or starting his own Fediverse server instances and ignoring people reporting his accounts (see also: Kevin Beaumont).