I am not a mentor currently. I have principles, so I dumped my crown and mentorship as soon as I saw just how toxic it is, years ago. I have been in the NN, and saw it for the mess it was. Mentors kicking people over disagreements, using it as an exclusive general chat, ignoring new players to talk about random topics. I know for a fact the game would be better off without it, at least without an overhaul - specifically the removal of the mentor program.
In addition, this whole problem, the problem in this thread, looks to be a disgruntled player. Someone who is specifically targeting mentors and the Novice Network. Removal of the NN would no doubt solve this issue.