It is a very well known issue that AI art had/has trouble generating the appropriate amount of fingers/toes/arms/legs. There's a picture in botart right now of an ai generated elephant. It has six legs.
It is so common that one of the first places many people look to see if art is AI generated is any shown hands/feet/limbs. That and teeth. AI cannot figure out how many teeth are supposed to fit in a mouth, or what size they're supposed to be. It'll get there one day, I'm sure.