In a very objective way, your pictures, profiles, and some models just don’t meet guidelines.
For example, this Star Fox model: Star Fox by drewcifer - MakerWorld
The first image and the profile image is a screenshot of Star Fox posing with hands on his hips. The printed image provided is Star Fox in a completely different pose. The printed picture is also incredibly low resolution and has part of the model cut out of the picture.
It’s entirely the fault of the lack of good pictures paired with incorrect pictures that’s making MakerWorld have to take down your models/profiles.