Oh, they do know the problem is real. But they do not talk about it. The thing is, we (including you) only see the stuff that gets through. There could be 9, 99 or 999 things being blocked by busy itch staff and systems for every item that is visible. At one point there was a bug where such system got displayed to regular users, hinting at the deep part of the ice berg that itch is fighting.
For your problem, you should edit your posts and remove the links to the faker. All your links to it. It is not indexed, maybe never was, but let's not discuss that here.
Since you are new to itch: that means, no one can find the game on itch without a direct link. Such as in your postings. And those gets found by google. Quite quickly. So if you do not remove it, it will be you directing traffic to the fake game page.