While this is community support and not tech support, you can include your ticket number of the oldest unresolved ticket here, to try expedited the matter.
Your thread topic is not what you complain about. Tag accuracy enforcement would be something completely different. It would be enforcing that rpg games qualify to be rpg games. And that action games be action games and so on. Which would be quite difficult, as most tags are rather vague and some even change meaning or are subjectively different.
Tag spamming / meta information spamming (the thing you mention are not tags, but meta information) is not allowed.
https://itch.io/docs/creators/quality-guidelines#do-not-use-unrelated-tags-or-cl...
The offending account actually risks a ban from the index. And from what I have seen, that would be overdue by the spam flood of projects alone. The way to report this, would be on some of the games with the report button, but an email to support should do the same.
The problem is, that Itch is slow to react to such things. It can take over a month easily.
The account linking to pirated games is similar. The games themselves can be reported by the report button on the respective game. The account linking to them, would need to be reported by mail to support. I did not have a look, but yes, this could be a malware spreading attempt and the account linking to the pirated games might have been hacked or is a fake account.
I have opinions about the malware situation.
I also have seen people naively "reuploading" things. It is not allowed, even if no rights holder complains officially. It is against Itch's terms of service.
(Oh, and they typcially would not answer you. They would just take action. In some cases, they might simply disagree with your reports. But in this case, it is obvious, that rules were broken. The classification spamming is obvious.)