Discriminating against someone for an entirely voluntary association is valid. There is nothing tying you to ml and it’s not an inate part of who you are, you’re using an account on it of your own free will.

Complains about who they willingly associate with

Refuses to change said association despite it being easy

Blames others for having a bad view of their associates rather than their associates for their behaviour

Yeah, you belong on .ml for sure