This is the best use for AI image generators imo: throwaway meme slop that isn't really supposed to look very good, wouldn't have been made otherwise, doesn't make any money off of other people's labor, and did not take away a labor opportunity/labor power from anyone. It's not like the AI companies are making money off of this, not even close, they're all bleeding to death.
Oh it's wasting water and electricity? The water and electricity were already wasted by training, you can't un-waste the water or electricity. In fact, if you refuse to use the AI model they trained then the water and electricity were wasted for nothing!
Oh it's plagiarism? Oh not precious property rights, I didn't realize we were fucking capitalists protecting the sanctity of copyright.