This is such an fascinating topic and I could talk about it for house (feel free to msg me 
) but to answer some of the questions directly:
Yes, we rely on uploader declarations, backed by a report system. If a model is flagged as undisclosed AI, we review it - we also do our best to review all designs submitted but the scale uploads means this process isn’t perfect.
The gray area around AI-assisted workflows (code help, reference images, etc.) is real and we’re not going to pretend it’s simple. Our line: if a human designed it, it belongs here. If a model was generated wholesale by a prompt, it doesn’t. We’ll keep refining that boundary with your input.