How can you even "identify" as a particular language speaker?
You can absolutely identify as a
native speaker of a specific language. Not everyone's linguistic background is straightforward. Many people grow up with significant exposure to more than one language, and they may or may not identify as a native speaker of all of them.
There's no such thing, you either speak a language or you don't
I was only talking about identifying as a
native speaker of a language, but you are wrong regardless. Just as it's not always straightforward to determine whether or not you are a
native speaker of a certain language, it's also very often (probably much more often) tricky to draw the line between being a "learner" and a "speaker" of a language.
The reason why you let people choose from virtually every language in the world is because that's the goddamn point of a lingual forum; to provide solutions for as many languages as possible
It's not beacuse there's "freedom of choice"
Congratulations on missing the point entirely.
all those languages are historically and scientifically grounded
What are "all those languages"? There are many -- let's call them linguistic systems -- for which there is not universal agreement, even among linguists and scientists, as to whether they are or aren't languages. Case in point: Bosnian/Serbian/Croatian. One language or three? This is just one of very many examples of how it's not as straightforward as you're making it out to be.
you can't deny the existence of e.g Slovak language
You can. Czech and Slovak are so similar to each other that many people suggest that they should perhaps be considered dialects of the same language. There are threads about this in the forum; you can search for them. Maltese is a dialect of Arabic that is now universally recognized as its own language, although it's not substantially further from Standard Arabic than some other dialects. Same with Luxembourgish: it's a dialect of German that is now universally recognized as its own language, although it's not substantially further from Standard German than some other dialects. There have been movements to declare Lebanese Arabic as its own language, and so on and so forth. None of this is as straightforward as you're making it out to be. Google "difference between dialect and language."
the only "scientifically grounded" genders are male and female - the rest is just a figment of imagination
There are two
predominant biological sexes, although they do not apply to every single person. Gender is
not a figment of anyone's imagination; what gives you the right to presume to know whether or not
somebody else's experience is valid or not? Gender is not about biology, so you can't make any claims about someone else's gender based on what you physically see.
Oh let me also pick "non-binary" though I'm clearly a male
Someone who is non-binary is not male, although they may have been assigned male sex at birth. They are not just randomly picking something for no reason.
No, that's not how it works
It is a fact that many people's gender and gender identity do not align with the sex they were assigned at birth. The way it
should work is that everyone should have the right to assert their true gender and have it validated.
Freedom of choice doesn't mean you can go for things which are not documented
There are many things that weren't documented for years because people didn't know about them, so that's neither here nor there. Your gender identity is also not a matter of choice. The only choice you have is whether to declare/assert it and seek for it to be validated.
just like freedom of speech doesn't mean you can say anything without taking responsibility for it
Total red herring.