I thought it was hilarious. Still do.
As for non-binary genders. Its not okay to make fun of people who identify as a different gender. But I also find alot of things people want to identify as, being incredibly stupid, and offensive in the fact it insults people with real actual struggles. (OTHERKIN, LOOKING AT YOU!)
also some of the things people want to identify as, make no sense in terms of things I have learned in both Biology and human sexuality studies, and the fact they are so unbased in any reality makes it quite seem like someone wanting internet privilege, because this is the only place people scream to be identified as such and such for the sake of their internet ego. It really is a big insult to actual struggles and gender identity oppression.
Another thing to note, either everything is sacred and Jokes should not exist. Or everything is up for grabs in terms of comedy regardless if you like the joke or not.