Ah. So it never did unquarantine for some people. (A friend of mine pointed out it was quarantined by itch right about when the jam ended. I considered removing the entry entirely, but left it to see if it would lift the suspicious activity marker on its own. Some people commented on some assets only in the files so it must have lifted for some people.)
I don't think itch liked that I made the account three days before posting it to the jam. I can't think of any other explanation. It's literally a few indexed pngs and a text file.