Technically the existance of non-binaries also makes the binaries no longer binaries (due to increased optionality), so it would be fair to say everyone is non-binary
If there already exists "a binary" then that says there are 2 states. "Non-binary" only means there are not-two-states. This could be unary (there is one kind of thing), trinary (there are now 3 things, the old 2 and new, secret 3rd thing), or really any n-ary set of n distinctly numbered things, so long as there aren't only exactly 2 of them.
One day aliens are going to meet us and wonder what happened in our evolution that made us biased towards seeing every noun in groups of two, except for rules of nouns which are in groups of three.
actually, technically it would be a trinary system, if we're looking at it like a spectrum, and if we're looking at it like a spectrum, i think it's funnier to conceive of it like a circle. Or to get the point across, like those political alignment charts.
It's always hilarious and frustrating when people who don't understand a topic try to disprove it. This is the same energy as flat earthers pointing to the horizon and going "See!?!" or anti-vaxxers pointing out people who still get sick.
Anyone who thinks this logic is compelling should actually crack a book. I'd recommend Judith butlers gender trouble, but this sort of meme is peak dunning kruger. Literally too ignorant of a topic to actually argue against it.