I think the ratio of women to men has a lot to do with that, as well, Query.
The Adult men I know tend to be, on average, more athletic than the women. When you jump considerably higher, the jumps are easier and safer to train. Going for the jumps and feeling safe doing so has a huge psychological impact.
They are also more competitive - both in general and amongst themselves - than the women. They will go for harder elements because they can and they want to - even if these are elements that they will never compete (i.e. due to level restrictions). If other adult skaters at the rink do harder elements, it's more likely to motivate them to push for them, as well, regardless of the practicality of doing so.
The women are generally quite different in their approach - they train more pragmatically... If they don't need the doubles, then they generally won't risk injury, etc. going for them. Job, Family/Kids, Husband, and other obligations, etc. They have nothing to gain from training the elements (if they can't use it in competition programs, for example), so it's a terrible risk vs. reward proposition for them. They will often pass on that. They are generally more risk averse.
Because there tend to be considerably more women than men on skating fan sites and in skating discussion groups, this has an effect on the discussions that are generated at those resources. Most of the topic-starters aren't in the demographics of Adult Skaters doing Doubles, so most won't create threads or discussions about them. You will also get less responses when you post about those things, because they will often not participate out of consideration for the topic.
Of course, there are other factors, as mentioned... And you mentioned some of them.
I think the best way to get the ball rolling is to just, start more discussions about it if you are at that level/training those elements. It may motivate others to do the same, as well!
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I'm only on Facebook for about 4 months per 24 month period. Outside of that, I delete my account.
I join Twitter only during the competition season (to follow competition live tweets), then delete my account.
Aside from that I don't use Social Media, and I really dislike how getting on Facebook causes people to default to Facebook for all communication - often I don't even have the app on my phone, because I get tired of the oversharing notifications.