Because AIs don’t understand physics. Or anatomy, given that Tux has three flippers here. (Nor do the upper swooshes make visual sense.)

You only need one piece of (timeless) advice regarding what to look for, really: if it looks too good to be true, it almost certainly is. Caveat emptor.

Seriously, ending up with nothing is always a risk you run when buying something advertised as non-functional in the hope of fixing it or recovering any undamaged parts. The fact that the components on this card weren’t original is almost irrelevant, because the result would have been the same if they were authentic but damaged beyond recovery.