[xigoi]

> Language is moving towards a disambiguation between male (as a kerotype or body plan) and man (as a social concept of what it is to be 'manly' in that society.)

No, some people are artificially trying to create this distinction. In normal speech, “man” and “male” are pretty much interchangeable.

> For example, when people say, "Be a man!" Or "man up!", they aren't saying, "show your adult male body".

They're saying “show properties that are traditionally associated with males”. These stereotypes have to place in modern society and I find it appalling that the people who claim to want equality are continuing to perpetuate them.