As a woman, I can really only speak personally to my own loneliness, which seems to be rampant nowadays for both sexes.
I would be interested in hearing what percentage of these men care about their isolation. I'm not trying to downplay or dismiss the problem, only trying to understand it. Many of the news pieces I've read about this take several logical leaps from polls showing few social ties or friends to "all these loners feel terrible, and they would like our help".
A few of my male coworkers would qualify. Many are very young, awkward, and just coming into their own. Some of them have characteristics that affect their self-image, I imagine, such as being extremely overweight or having an intellectual disability.
More than a few, however, do not express any interest in getting to know anybody. Even people who've worked alongside them for years know nothing about them. One kid is clearly autistic and has a bitch fit when things don't go the way he would predict. He talks but has a very limited range of interests. I think the dude has been near 100% the same from age 14 to 28. There is no character development there and no interest in obtaining it. He clocks in, works, talks to people as little as he can get away with, clocks out, and goes home.
So, when I hear stuff like this, I have to wonder where a guy like him would fall in the "male loneliness epidemic".