I imagine that, if he hasn’t (because shaped from clay or whatever) then it implies that the presence of a belly button in every other human is a “flaw,” which is in-line with the idea of fallen creation.

That said, “made in God’s image” does not mean resembling God. It means made as God’s “imagers” - symbols of his power and keepers of his will. It’s a concept inherent to every other early middle eastern religion; Idols of a deity, even as little statues, are exactly that. Yahweh didn’t need statues because humans were his “statues”.

A mistranslation, unfortunately.