Proposing restrictions on speech is one thing, even if targeted at an individual, but abusing the trust system in attempt to silence someone is entirely another..
Wouldn't you agree?
I know you're trying to produce an analogue for your situation but given that I don't know the full details, I can't say anything in relation to that.
However, when it comes to this premise, I agree. The trust system should be used responsibly and as objectively as possible. One cognitive bias that would be very prominent in trust systems is the association of traits towards a person. These might then influence how you process their posts/information, leading to skewed outcomes and potentially significantly-different perspectives when two people look at the same issue/topic.
Is this what's happening?