I think this has mostly demonstrated that it is impossible to moderate Discord to everyone's satisfaction. When mods do less people are furious; when mods act, different people are furious. The E stepped down because he is a sensitive guy who cares about what people think of him and cannot help doing so. If he had the virtue of giving no ****s about people who obsessively bag on him due to their own mental health issues and their terror of rejection, he would probably be in a better place.
This community's habit of endlessly relitigating every moderator action for days or weeks (or clinging to it for months as proof of a literal communist conspiracy that you bring up EVEN WHEN YOUR BOOGEYMAN MOD IS NOT INVOLVED!) is ridiculous. I've been moderated plenty of times, and while I'd commit all my crimes again with glee, I don't resent the mods for it. There is a sizable fraction of the Discord community that sees 'someone leaving the Discord,' or actually being banned from it, as the worst thing that can happen-far worse than, say, calling people subhuman aborts, or arguing women belong in breeding camps. It is not. A discord is not real life. It is not a vital artery for human interchange. It is a curated conversation about a specific topic. You are there on the sufferance of the moderators for so long as you make good posts about spaceships.
The people who conflate 'moderator action' with 'bullying' are brown noise. The point of a moderator is to exert power to control a conversation.
Possibly, if you are going to have a discord for talking ****, the **** talking and related actions should remain confined there. I don't know if there was a 'rally on this conversation' effect here, but I do think there was a degree of 'we need to teach mjn a lesson for his ongoing sins' effort from many people. And as I said earlier, it should've been emotionally obvious he was not in a space to learn and grow here.