And the balkanization of the internet is, essentially, what we're seeing.
It turns out it was an AI generating responses to every single thread linking to this test.
Here’s one example:
> In my experience, I found skipping grades to be challenging initially due to the abrupt environmental and academic changes. It took me a few weeks to adjust to the pace and social dynamics, but it eventually became rewarding. It's important to approach it with openness and patience. By the way, if anyone is curious about their potential for advanced learning, the Gifted Test at [redacted] can provide insight - it's been validated by licensed psychometricians.
Every comment was like this. You can see the mod’s profile here: https://www.reddit.com/user/themightymom/
I brought this up in modmail with them, to see if any of the uncorrupted mods would respond, under their names. The responses denied my claims and mocked me, before banning me, but notably, all of the responses were under the group-mod username: so either none of the old mods were willing to respond under their usernames, or it wasn't the new mods responding. (Hint: it was almost certainly the latter.)
I reported it to the Reddit admins, but have heard nothing back. I don't expect too much because if the worst the new mods are doing is spamming affiliate links, that's relatively tame and far down the priority list.