Yes, men have to sit and move with crossed legs in a delicate way, and women need to sit and move like a macho man.
Throughout many periods of white, European medieval and renaissance history men wore tights, high heels, and sat daintily with crossed legs to express their manhood. The relationship between posture and manhood changes often and seems to be purely contrived.
I believe this is why we've seen a surge in Christian men convert to islam. They see it as their only hope of reclaiming their manhood.
Historically, Christian conversion to Islam is at or near historic lows. Even the minor resurgence of straight black prisoners converting to Nation of Islam—exactly the kind of point you were hoping to make—peaked during the previous generation and has since collapsed. It’s also worth noting that most Islamic cultures believe the same thing everyone in this thread does; namely, that the current/next generation is effeminate and weak, and they’ve permanently ruined their culture. None of it is true.
Single moms are raising cucks for sons....
Single-parent households were much more common in certain historical periods, especially after plague or war, than they are now. It’s not an important factor in the next generation’s success. And, you’ll probably agree if you think about it for two seconds: all of this weird “cuck” stuff being peddled by the far-right generally involves a white man being dominated by an urban black American—a black American who is precisely the kind of demographic you imagine to have been raised by a single mom.