Any day that goes by with Fab still having Spiderman, Goku or Mario models (free or paid, regardless of them being made from scratch of ripped from games) demonstrates that there is nobody at the wheel and that Epic themselves aren’t taking their platform seriously.
This kind of stuff may have been tolerated back in the Sketchfab days (for instance : artists creating fanart and hosting it on Sketchfab because of its powerful viewer), but it really has no place anymore after the merge with the Unreal Marketplace.
Earning back the trust of creators should be your utmost priority. The current situation only degrades the credibility of anyone involved with the platform. It’s just not serious at all.
The above suggestion of putting all Sketchfab/unvetted assets as drafts until they get manually resubmitted for review makes a lot of sense.