Transgenderism? I don't recall that being an ideology, but then people like making up what their opponents believe all the time. "Scientism" anyone?
But, the idea of people passing themselves off as/wanting to be a different gender is... a fairly old concept. It's not a "new fad" or anything.
Why shouldn't porn exist? There are lots of porn I personally loathe and think people who get off on such things gotta have some problems, but as a whole, why not? And so long as it's just someone watching something that didn't harm other people, all good. It's why I'm usually far more lenient on drawn images (even if they are vile) than pictures/video of some actual crime.
And, no. No gender is "superior" than another. Men aren't better than women, women aren't better than men, there isn't some rock-paper-scissors with nonbinary folks and not. People are people.