It's complicated in German. Almost every noun being gendered brings up a bunch of issues unknown to the English speaking world, long before we get to the topic of non-binary folks.
Just imagine every job description, occupation and whatnot being gendered, with male being the default. In English this is rare nowadays, in German it's baked into the language. A doctor and a doctoress, a maypr and a mayoress, a student and a studentess, a cyclist and a cyclistess.
The feminist movement has been trying to find solutions for this for decades, they are fairly controversial among older conservative folks, and admittedly inelegant.
Concerning non-binary folks it gets even more complicated. Not only does referring to almost any description automatically infer a binary gender, we also don't have any option for unspecified pronouns other than "it", which is hugely dehumanizing. The equivalent of "they" is already used as a honorific.
Some people tried introducing neopronouns but they never took off. Most enbies I know simply chose the binary pronoun they are the least uncomfortable with and stick with that.