That would be nice features indeed.
In the meantime, I made a tool for that if you can run browser extensions. It's a script for tampermonkey that lets you hide projects individually and by developer.
For ai assets specifically, you should be able to use the no-ai filter for assets https://itch.io/game-assets/tag-no-ai . Older assets that did not fill out the ai disclosure question are supposed to be delisted, but there was no date mentioned when this will happen.