I had a different reply typed out but I've decided to change it because:
This is such a weird reply. It really feels like you're claiming that people pointing out that abusing mod powers (objectively a thing being done) are somehow in the wrong for doing so just because the people abusing the power are those who coded the site it's being done on.
The choices users have to deal with an issue like this are to block (per-user, so they have to discuss it), defederation (a big decision, so discussion), or leaving entirely (in which case theyd want others to come with, so discussion). That is unless shaming the people doing it works, but they've kinda shown they don't care as this is far from the first time this has come up.
How is it at all embarrassing for the users of a forum to discuss on said forum one of their few methods of recourse to people with power on that forum abusing it?