Interestingly enough, it may be women themselves due to societal expectations.
It is legal in Canada. One day me, my partner and a friend (very feminist friend) were at the park in a nice spring sunny day. I removed my T-shirt and laid on the grass. She said something like “I think is should to”. I said " go ahead, why don’t you?" and she said something about feeling uncomfortable because no one else was doing it.
(It wasn’t shyness with us. I had already seen her naked)
I’m non-binary and don’t commune with binary choices.
I can be in parallel on Reddit and Lemmy. Eventually I may feel totally comfortable in one of them to ditch the other, or maybe not. Who cares?
Plus there are two sides for users in social media, producer and consumer.
I can be on Insta as a consumer checking what my friends are up to and on pixelfed posting my pictures and sharing the links with my friends.