Its remarkable: hands seem to be a major problem for a AI. Well, not only for a AI - also for traditional painters it was always one of the hardest tasks. So it is not such a surprise that AI also struggles with that.
If you look at those AI pictures of the totally realistic portrait photos, which I recommended to you a few days ago, it shows very drastically as well. While the actual faces look perfect, the background and especially the hands, which are visible in some pictures, look quite terrible. The hands look like the person had a bad accident with a industrial machine or something. If you click on the link that is given in the post - https://thispersondoesnotexist.com/ the AI will create a new "photo" each time. And sometimes it puts a hand or a face from a second person into the frame, to create a natural impression of the surrounding. Unfortunately this doesn't work at all, because those parts mostly look like they from mutants.
Well, nothing starts off perfect. With some more effort they will get this issue sorted out as well, I'm sure.