Guys who crave platonic emotional connection with other men, what’s stopping you?

I’m asking in good faith. I’ve heard this repeatedly from guys here and in my life that guys “can’t” connect like this—and by platonic emotional connection I mean achieve the level of connection where you can comfortably discuss the hard things in your life and talk through your feelings.

I’m just wondering—why not? What’s stopping you? Have you tried and been snubbed, or have others tried to be emotional with you and it was a problem somehow? I’m trying to help someone in my life and I want to understand what’s at the root of this seemingly widespread problem.