Why is this a problem? I genuinely don't understand.
Me neither.
I'm assuming things in the US are very different than they are here in my country (or I am particularly oblivious), because the comments on Dalrock's blog post fail to resonate with me at all, and I'm a male -- and yet Konkvistador seems to know what this all is about, even though I guess his country is even further away from the US than mine [EDIT: looks like I was wrong] (but he's much less oblivious than me on this kind of things).
At least for a lot of folk, including many of these men, their choices reflect expressions of limited choice. They're expressing lack of interest in marriage (and sometimes even dating), higher education, and the job market not because they lack interest in these things, but because the external costs of following these interests are extreme and increasing.
If those costs were reasonable and desired by society as a whole, that might be acceptable, but it's not clear that they are. The internals of divorce case law are not established by the desires of all...
Dalrock writes an interesting article related to Dr. Helen Smith's book the Marriage Strike. I really have to bump it up on my too rapidly growing reading list. (^_^)