Non-binary option for characters, please?

[kikix12]

And yes, with some languages the rampant gendering of everything is done to a ridiculous and inappropriate degree.

What is "inappriopriate" in it?! Go on, explain. Just don't bother with the "it doesn't account for other genders" and all that. Humanity existed for tens, hundredths of thousands of years without "other genders" having any issues with any of it or even without being defined. The only problems they had were related to their interests being potentially seen as disease and could lead to public execution...but those are two entirely different problems.

There is. You need look no farther than gender roles and stereotypes to know this.

Those have nothing to do with the language. A car can be masculine in one language, feminine in another. But it's going to be considered a "boys" toy in most of the world. Why?! Because boys DO tend to be interested in cars more often than not while girls DO tend to not be interested in cars more often than not. The problem arises from people thinking that "tend to be" must mean that everyone that is not is a problem. There is no problem with girls being interested in cars and boys being interested in dolls (that are not "action figures"). But that does not change anything language-wise. A doll is a doll, a car is a car, regardless of whether they are considered "male" or "female". I'm a guy that is eating using a spoon (in my language feminine) and a fork (in my language masculine) from a plate (masculine) placed on a table (masculine) while sitting on a chair (neutral) under the light of the lamp (feminine), drinking after the meal from a glass (feminine).

Where is the problem you speak of? Am I supposed to never use spoons, chairs, lamps or glasses because I'm a guy? Huh?! Seriously, creating such artificial problems is the real problem of the society nowadays.

No, you can't, as they are not the same.

Go to just about any dictionary or encyclopedia. Online or on paper. Usually the first definition of gender clearly defines it as a differentiation between male or female. Nowadays the "often withing social/mental aspects" or something of that notion. OFTEN. You seriously need to study more if you think that gender cannot be used in any case that sex can be used.

I'll even jump-start it for you.
Oxford.
Wikipedia.
Collins (the third definition).
Merriam.
Cambridge.
Urban.

Seriously. Denying that fact is equivalent to denying that you are a human and that trees are made from wood. Seriously, there should be a limit to ignorance.

But no matter what language/culture you're dealing with, trans people exist somewhere, and if a language cannot account for these people it kind of speaks toward the language's primitiveness and its refusal to evolve and get with the times.

Our languages can account for these people. Our languages just don't compound tons upon tons of irrelevant stuff into a single word to confuse people. You can use "płeć społeczna" or "płeć biologiczna" (social sex and biological sex respectively), so that we are free from such issues.

Again, languages primary purpose is communication. If you fail to communicate your message because of muddled up meaning of the words then the language fails. Compounding tons of meanings (especially if they are similar but not the same) into a single word is a horrible thing that absolutely RUINS language.