The only reason to get mad at someone calling you a bad leftist is if you think it might be true. People will absolutely prey on your insecurity to make themselves feel like their chronic posting habit is praxis. The solution is to not be insecure. Be humble, do honest self-critique. Don't let lonely people work out their frustrations on you. There is a difference between pipe-lining and emotional blackmail.
Not sure its so silent if that mod is also separately referring to the targeted user as a "pick me".
Also it doesnt seem like so much "misinfo" to speculate that certain kinds of users have different threshholds for what breaking harrassment and hostility rules means when an admin does get links to current and past examples of it, then talks a bunch of stuff about time and attention being limited, then goes back to removing other posts for concern trolling and misinfo(at least according to the mod log time stamps, if these are faulty then shit, sorry i guess).
Comparing the linked users behavior to other users who have gotten reprimands like bans for hostility, its pretty absurd that nothing has been done aside from removing comments, for the most part recently only for either not disengaging or a blanket "inappropriate".