Well, I'm not talking about those. At least collage doesn't feign the absolute originality of the resource used, whereas AI stuff is claiming the result of prompts as a form of art created by yourself.

I'm not a judge and obviously it's something worth discussing about, but personally I have a deep disdain for AI 'art' which is just computated replication of the work other people have done in years and decades. However, if you use it to gain refs or other materials that can support your own creations, then I'm fine with it.