In my experience this reflexive "more is better" attitude only leads to unhappiness. the more I've abandoned this kind of thinking, the better my quality of life has become.
I think the argument is not that other people's emotions are wrong or nonexistant, but that different cultures assume different behaviors in regards to those emotions. Responses to the different emotions are culturally coded, hence there is no "correct" way to respond to an emotion. Just because someone feels a certain way does not imply or entitle them to a certain kind of treatment.
I'm not trying to apologize for ultra-masculine culture, but this epistemic argument about the presence or absence of emotions boils down to "their culture is not my culture" and just increases the divisions between those cultures and accelerates the culture war.
In the end - if what you actually cared about was people being uncomfortable you'd think through the economic, social and technical structures that make them feel uncomfortable. IMO, it has overwhelmingly to do with naive adoption of technology, with PC culture being a way for those who benefit from this adoption to cope with the negative results of that adoption.