I don't oppose AI-generated images in the slightest. I love them and I genuinely think they will be a very important part of our future. Effectively, it will take more effort to make a living as an artist, especially a mediocre one, because AI is now a decent mediocre artist. It's a stupendous artist for some prompts, too.
However, I can understand that if I can just spit out image after image, there must be a way to "limit" my submission of these images. In that sense, I "get" banning AI-generated images, as a way to stop spam.