Evidence that, in the west, manhood means the world to men, and they change their behaviour to how the society defines manhood,

Evidence that, in the west, even today
(i) manhood means the world to men, and they change their behaviour to how the society
(ii) they change their behaviour to how the society defines manhood, and that
(iii) there is a lot of politics and social engineering to change and control the behaviour of men through artificially defining what is considered masculine and what is not:

Evidence for (i) and (ii):
...consider the hardwiring of a boy’s heart. Researchers tell us that in every culture there is a code which defines what it is to be a man, a code which boys learn very quickly. This code helps a man overcome his natural instinct of self‐preservation to do what is best to protect the women and children of the tribe.
He fears harm less than he fears the shame from the rest of the males if he fails the test of manhood.
Masculinity is conferred on a male by the other males of the tribe. It is something he earns. If a man fails to be brave, stoic, and self‐sacrificing, he is branded a sissy and becomes an unmanly outcast of the men of the tribe. If a man succeeds in his manly endeavors he adds coins to his masculinity bank.
Males avoid anything that might drain their banks. That is why womanly behavior is so damaging to a male, especially a boy.
Interestingly if a woman engages in male behavior, she is often seen in a positive light, as a tomboy, or deliciously rebellious. Not so with a man who engages in womanly behavior. He will be branded a sissy at best, and often much worse. Men are embarrassed to appear feminine in public. Ask any man how he feels when he is asked to hold his wife’s purse even for a moment. Nearly every instinct in our son’s heart is to resist appearing to be feminine.

Excerpts from:

Boys, Masculinity, and the Church:
Why Boys Need a Strong Men’s Ministry

Evidence for (ii) and (iii):

So, if our boys see Christianity as feminine,what should we expect their attitude towards it to be?
Our churches need to appeal to our boy’s God‐designed masculine heart. John Eldredge writes, “When all is said and done, I think most men in the church believe that God put them on the earth to be a good boy…If they try real hard, they can reach the lofty summit of becoming a nice guy. Now let me ask my male readers: In all your boyhood dreams growing up, did you ever dream about becoming a Nice Guy?”ii
Men and boys dream about saving the world against impossible odds (and winning the heart of the beautiful princess in the process.) They are created for challenge, risk and reward, adventure, action,heroic sacrifice. Those motivations were precisely the masculine drives that Jesus appealed to when calling the twelve. Jesus had no problem attracting men. Fisherman dropped nets full of fish to follow
him. Hardened soldiers were awestruck by the power of his presence. Our sons need to hear the message, “Christ’s call to follow him never denies your masculinity. Rather it fulfills it, especially when you understand that to follow Jesus is to enlist in a war between two kingdoms.”
Our sons need to grow up in church where men have an identifiable presence as a band of brothers committed to being warriors in the spiritual battle together. They need to see in the men’s ministry that the church is a place for men and see that their masculine longings to compete, to be a warrior, to win, to take the hill for their commanding officer are fulfilled in their calling to follow Christ.
They need to be around men in the church who remind them that we are called by God to participate in nothing less than his grand plan of redemption for the universe, following King Jesus in the conquest of this entire world, spreading his kingdom geographically to the ends of the earth, and spiritually to the very gates of hell itself. Our passion, as his followers, is to see all of life redeemed, across the globe, for his honor and glory. Our calling is to something a little bigger than being a Nice Guy.