Grok has GPT IMG blockers/bias

I'm 100% sure about this by now, but I'm not sure if it is a bug, filthy business model tricks which Grok proudly exercises, or avoiding getting sued issues maybe? or whatever else issue.

I generate a dress sheet in GPT since it does it better and cleaner, asking grok to swap clothes in the image it generated itself but it gets moderation flags, then I ask grok to generate the same type of dress, even much more madly revealing, it has no issue and doesn't even bother with moderation

you can push Grok i2v with grok generated images, but you cant even get close to the same prompt using the GPT generated images

whatever it is, it is way obvious