Wasn’t one of the chief complaints that the moderator in question was deleting posts/comments and subsequently banning users for differing from their political views or what they interpreted didn’t apply to this subreddit?

Their actions seem akin to going to an open house at the state house, criticizing a state rep, and then getting banned from the state house. Discussion about the ins and outs and moderators of this subreddit is inherently part of r/Massachusetts discussion, and should be allowed.