Well, certainly not everyone agrees that people should be entitled to an opinion here, because we have science on that shit. And science tells us that nature is messy.
Whether we’re talking about psychological gender or biological sex, proclaiming that there’s only two categories is provably false. It’s like proclaiming that all colors are either orange or blue.
I guess, you’re allowed to be wrong. Hell, you’re even allowed to be wrong publicly. But if you are, you’re not entitled to not being corrected.