I'm not seeing the "insulting users of the community" point you stated OP, could you clarify? I did see one snarky response to a dude calling him an asshole, and I also saw posts stating he shouldn't be a mod, and generally very hostile responsens. Those in mind, I think his output was quite civil even though I disagree with his reasoning and opinion to large degree.

This feels like a witchhunt to me, and I for one don't think a volunteer moderators job should be in question if he has a hot take on something. He's just keeping the spam etc. clean, he's allowed to have differing opinions on subjects, as long as there is no misuse of his mod powers.