Stating a misrepresented version of an opponent's argument for the purpose of having an easier target to knock down. A common, but deprecated, mode of argument. I think not. In fact, although your first sentence above disagrees with what I said, your second sentence turns around and agrees with it. And these were some examples of some of those things.
Male chimpanzees attract females' attentions by displaying their erect penises.
If women pad a bra, we would be wearing codpieces. And bipedalism is used by chimps and gorillas during threat displays. This sort of deliberate display was undoubtedly used by early bipedal hominids, both in threat displays and sexual displays. So it doesn't seem especially likely that the height differential was especially selected for by early hominids. Habitual bipedalism would also make sexual display an even more common part of life, even without deliberate, conscious display by the male.