From a technical perspective they are impressive. The depth of field in the classroom photo and the macro shot. The detail in the chameleon. The perfect writing in very different styles and fonts. The dust kicked up by the donut.

The artistic value is something you have to add with a good prompt with artistic vision. These images are probably the AI equivalent of "programmer art". It fulfills its function, but lacks aesthetic considerations. I wouldn't attribute that to the model just yet.

I'm willing to bet that they are avoiding artistic images on purpose to not get any heat from artists feeling ripped off, which did happen previously.