Right wingers seem to have an issue with both feminine men and trans women
I've noticed a lot of inconsistencies from these kinds of people when they obsess over these subjects. On one hand, right wing and "anti SJW" types will mock and deride femboys on the basis that they're not "real men" and that it's laughable or degenerate for boys and men to wear dresses, makeup or play with dolls. They also fear monger about how women are being masculinized and the men are being feminized, and that feminists and SJW's want to destroy gender norms. But then they also bash trans women, repeatedly calling them men and insisting that they can't be considered women just for liking extremely feminine things. In which case, it's basically not possible for someone born male to be feminine in a way many right wingers find acceptable. You're viewed as broken and a degenerate either way. What's also strange is that these same people have begun cosying up with "gender critical feminists" aka TERFs, despite the fact that many TERFs have the same feelings of gender norms being bad, to the point where they refer to gender norms as sexist stereotypes and label themselves as "gender abolitionists". Odd considering that those are the very opinions right wingers complain about so much, but they platform people who say those things in the name of demonizing trans people. The more I look into this stuff as someone who isn't inherently interested in politics, the more it becomes hard to take conservatives' endless complaints of being unfairly accused of bigotry seriously. When you're so bored and petty that you'll actually publicly complain about the way other people dress, it's safe to say you lack priorities.