>most people stuck in unhappy marriages are men

That is wildly untrue. The research on whether men or women are more satisfied in their marriages shows that they have about the same levels of satisfaction.

For example: https://onlinelibrary.wiley.com/doi/10.1111/jomf.12077

Not really sure why the demographics of philosophers effects the impact of the statement. Most philosophers are white, would it have been more impactful if the statement had brought race into it?