Well, I agree that "man up" is now for the most part a shaming tactic by cuckolds, feminists, betas, etc. It all depends on what you are being told to "man up" and do. Man up and take care of some other guy's offspring? Man up and wash the dishes? Man up and pay for all women's meals? Yeah in those instances I agree with the guy, and that's likely what he's b*tching about. Especially since they are talking about the media.
I don't remember the media telling anybody to "man up" and dump the cheating b*tch of a girlfriend. Media would rather you buy her flowers and be sensitive to her feelings.