There seems to be an unspoken bond between men regarding cock size. Sure, any decent man won’t humiliate another guy without his consent. Sure, any decent man knows there are countless other factors at play when it comes to determining “manhood.” In fact, any decent guy doesn’t set out comparing himself to others unless it’s to make sure they have enough.
However.
In spaces where men let our instincts take over, there seems to be an unspoken acknowledgment that a man who is packing has some kind of superiority. Even if it’s just dick size, it’s still one case where one man has more than another. And I have plenty of reason to believe that it is an instinctual response for a man, when he is confronted with a man who has more - who is “superior” - to submit to the man who is superior.
This is why there are guys who have sex with men without getting into relationships with them; it’s about power dynamics. So yes, when confronted with a huge cock, plenty of smaller guys will have an urge to submit and worship, however that manifests.
Size doesn’t always matter, but instinct allows us to make it matter.