Exactly. This is the biggest issue with the whole situation.
GM policy is hidden from players, we have no idea what the actual criteria they make their judgements upon is, that's wrong.
This leads to uncertainty and anxiety to build up in the community and seeing a GM act out in a way like this on supposed ToS violations which may or may not be part of the "proprietary moderation policy" is really alarming. The whole system needs to be re-evaluated from top to bottom to be fair towards players and the moderation staff in equal measure, as the current form the system takes is draconian and absolute—which isn't the way to run a service like this.