I'm back. Effeminate men/boys are ridiculed because they are viewed as like women.
But to be fair Kim, you have to compare gender non conforming boys with gender non conforming girls. And then you can see gender non conforming boys still have more privilege than gender non conforming boys. Teenage girls who are "masculine" are ridiculed, threatened and attacked.
As you know Kim from thread you have been on, rape and sexual assault is a very very common experience for women. DV is also very common. Being sexually harassed on the street e.g. comments about breasts, etc is also very very common. All of these experiences reinforce the message to women that they are vulnerable. The fact that so few people speak out about it, reinforces the message that they don't really matter.
And of course men can have bad experiences/pressure, etc, but we are talking about women here. This section of the forum is a feminist one.