There is a point in that since you don't know how these really should look you can't really judge them on small idiosyncrasies, and hence you get a better impre

There is a point in that since you don't know how these really should look you can't really judge them on small idiosyncrasies, and hence you get a better impression compared to uncanny valley if it's something common. However, I also think this is to show that it can create anything, not just copies of stuff it has seen. If you ask for a painting of a woman and it shows you mona lisa, that's not very impressive.