There is a certain user, let's call them A., that has the tendency to comment on every post that mentions Schwartz distributions, usually accompanied by a downvote. These comments are completely unhelpful (they do not serve the purposes outlined in the help centre). In fact, they are always of the form "OP does not understand distributions", which is very much false: OP's claims are (usually) perfectly correct, and it is A. who doesn't understand distributions.
These comments are not only very annoying, but also dangerous to some degree. If OP is not knowledgeable enough to defend themselves, they may be led to think A. is right and they are wrong. Which is never the case, as far as I can see.
I am sure many of you know who I am talking about. What can be done about this disruptively repetitive behaviour? I tried to ask A. to stop making this kind of comments, but to no avail.