What I actually do when I find something interesting and want to know if it's AI slop:
- Check what tags it has.
- If the "No AI" tag or the "AI generated" tag is among the tags, stop.
- Browse for the project's tags.
- Add the "No AI" tag.
- If the project shows up, I assume that it is clean. If the project doesn't show up, I assume that it is tainted.
Needless to say, this is a completely horrible user experience, but it's the only way I know to be sure that any assets I purchase are AI-free. I refuse to put AI slop in my games, even if it doesn't look like AI slop.