My husband wouldn't join Gransnet either, but I don't see that as a particularly desirable thing. Perhaps if men were more willing to chat and express their emotions and opinions, without feeling they have to dominate a conversation, I think that would be a very good thing. It might improve their mental health.
Some of the female posters on here seem quite proud that their partners would not engage with this site. In a way, that reinforces the stereotype that the interests and preoccupations of men and women are totally different: that women are silly little creatures who engage in silly little pursuits, that men are far too busy and important to chat just for the sake of it and that it is somehow admirable that men keep their distance from women.