"Manliness" is apparently one of those things that varies a lot from family to family, town to town, etc. I was never raised with such strange expectations, but my neighbor was. If he didn't do the right thing as a male child, he got the crap beat out of him. And as an adult, I have known men who play the role with gusto, and others, such as myself, who kinda forget we're supposed to be all testosterony and stuff.
The level of manliness kindred is referring to is probably, for the most part, something left over from about 50 years ago that refuses to die. Not that it had no redeeming features (taking responsibility for ones actions comes to mind), but the power-tripping/husband as master/find a mate with a club stereotypes should have disappeared by now. Again, there were things about the overall attitude that were just fine, but the male-superiority thing has got to come to a grinding halt. We're good, but we're not that good.