Wtf? Some of my apps have been rejected in the app store submission process the first time for spelling mistakes alone. How can something like this slip through? And how is it possible that scamware like this is in the top ten for two month?
Asking that myself very often - there is a couple of categories of apps with bullshit and scam on top of the top-grossing lists. Annoying, and Apple should definitely make reporting those easier and tighten up on fraud checks.
The cutoff is "about a year". That window varies a bit depending on the article. In this case, because the story had such a lot of attention on HN in 2017, I stretched the window; but it was a borderline call.
In general it's just fine to post older things that are interesting.