One problem with images is that where a text generator's output could be nonsensical or ungrammatical, the output of an image generator can be nightmarish. See

One problem with images is that where a text generator's output could be nonsensical or ungrammatical, the output of an image generator can be nightmarish. See the Face Like an Escher Drawing in the article. I'm not sure I want to spend a hour looking at the outputs of the generator to select the good images and drop the bad ones.