Then you too can join the ranks of people spamming asset stores with low quality AI generated material. You're at least a year late to that party.

I have no clue why someone who wants art as output would do this but you'd probably get some mediocre mishmash out.

You would get a generic result probably.

I think it's a fair concept to try if you need to add a few things to complete the game. As long as you're using it yourself and not reselling that. But IANAL and haven't read the copyright.

well they're CC0, so no one's stopping you from experimenting. Your results will vary as much as you talent with those tools, I suppose.

Nobody knows.