When I read those in Discord yesterday, to me, the context, when placed in context with those saying the GM's were targeting those that ERP, on a 4chan board I found, (talking about in game moderation, with some very not so well chosen words about Gwiz, and several of the GM's here) sounded less like they were mocking ERP players, and more like they were mocking those on said boards.
I can provide you with a link on Discord if you like, so you can see the type of behaviour that was prominent there. It was beyond what I thought was going on. And if these people were talking like what I saw on those boards in game, it goes beyond ERP. Judging by the way they were talking, and if they were publicly or even privately treating other players like this, I can see why some of these people were banned, as several were talking the exact same way several trolls on these forums had. You know the annoying trolls with multi alt accounts, that consistently cause arguments on purpose.
Now, this isn't to say that some private ERP people weren't getting caught in the cross fire by association, and that's not to say it's not impossible otherwise innocent players were banned, in a full sweep of the player base. Because I believe the GM's got tired of certain behavioural patterns, and went full scorched earth on the playerbase, and have been going through more accounts then were actually reported, because some of the people posting, weren't the average board user, were calling out the assholes in there for getting them banned, temporary or otherwise, and were disappointed that their private, consensual conversations lead to GM's feeling that they should be banned.
This all said, if GM's were mocking ERP players, for what they did in private spaces, (public is a different story, because passers by may not want to be pulled into some otherwise odd conversations, or uncomfortable ones) this in my opinion is unprofessional, and needs to cease. You can hold your opinions about these players in private, but your opinions should never dictate how you moderate, and should never be publicly displayed within the rest of the community. Moderation of players, needs to stay professional, and only ever mention ToS, and the topic shouldn't joked about in that context, considering what the players whom did partake in ERP, were otherwise decent people, at least from what I can see.
Mocking assholes that constantly troll, or cause other players distress is one thing, but ERP players, that kept things private, and otherwise weren't bothering other players, should never be treated in such a fashion, regardless of personal bias, or terms regarding sexual content. It's a bad look, and people on the outside of the community looking in may steer clear of the game when they see that. It's not the behaviour I want to see from GM's or anyone in seats of authority in general. And I still say, that unless someone is being harassed, or wronged in some way, private conversations, should not be subject to enforcement in any way, especially immediate bans, temporary or otherwise, and should be allowed to remain private.
Moderation in any setting is supposed to maintain the peace, not go beyond that and try to make all conversation sterile to the point private conversation between friends is out of the question. And if it was ever found that was happening, the legitimacy of any mod would be brought into question. I know because I've had to curtail myself several times as a moderator in similar settings. I had to remove myself from the equation, and focus on people taking peace out of the equation, and sowing chaos, or causing problems in general. I worked on a three strike rule of thumb, two warnings and a permanent ban. But I never silenced constructive criticism, and I never mocked a person publicly where the average user would see, and tried to maintain a displine. I was friendly sure, but I had a job to do, and could never allow myself to get so close to someone, not in moderation, to have inside jokes. Doing otherwise would have removed any respect from most average users, and even the possibility of respect from my detractors, and results in situations such as these where the average user is picking apart every action, or inaction mod teams take.