The "trivia quiz" submissions look like a spambot put them there. Thoughts?

I have the same impression. The games are apk files and itch.io has already flagged them as potential risk. Also they were submitted even before the topic announcement and they are, therefore, not related to the jam theme.

Tbh, I think they're just bots trying to get a prize or something, since they were submitted to other game jams too

yes

Yes, it doesn't even look like a nostalgia-inducing game

There quite a few games which are submitted to, like, 10 jams. But I think jam owners doesn't bother about it.