It's not uncommon for folks who identify themselves this way to overlap with the circle of those who do these things you called out.
Also it's kinda fascinating that person with "pronouns" (implying "let there be inclusive acceptance") is so against… anime girls…
I think it is very uncommon actually, especially if you consider the global population of non-binary-gender people, from the many cultures we exist in. Don’t let a couple of online bubbles skew your perception.