I told them about a network of similar accounts. Request 207509. About two months ago. Nothing happened.
It is fake accounts doing fake comments. And it is still going on. I checked just now.
Same as your case, one liners that have nohting to do with the game commented on. Or meaningless comments fitted to the genre. Like on horror it would be about being scared. Often the same comment on different games. From the selection of games, it looks like they pulled the top pages of popular or recent and just commented on each game.
My best guess is, someone is growing legit looking bot armies to later sell good ratings and comments or manipulate ranking in popularity, or manipulate jams.
Maybe it even is manual work, an enthusiast could do this no problem. But those accounts I reported are commandeered by a single source. Faking comments is not a thing Itch should tolerate.
(Oh, and I do not think your fan is such a fake commentor as I described it. For one, I do not see any other suspicious comments. Having a single bot is not worth the effort. It rather looks like someone liked a game of yours and is slowly digging through the rest and likes to give comments. So maybe remove the name calling, if you are not convinced that it is an illicit account)