Either this is irony--and I don't think so--or he is telling the world what a lousy husband he was...
Of course it's an admission .. how could anyone honestly say that without realizing what he is saying? I'm sure he gets it, otherwise he would be too clueless to know that that is what had become of him. And it's not just about him, it's about divorced men in general, back in their pre-divorce phase.
I also have been known to miss the obvious, but have you considered that perhaps this poor sad sack has met that common monster?
The self-absorbed, manipulative, controlling, insecure witch from hell?
There is a remarkable number of them out there. No, I don't speak from personal experience, but I got eyes.