Still, it would break grammar rules similar to the -x ending, right? Although from my limited Spanish knowledge the -x ending would require some explanation on how to pronounce it, just like the German *-variant. The -e might be more intuitive though.

But from what I've seen on the internet, by far the vast majority of criticism of the -x variant are immediately followed by some right-wing talking point, which is why I'm somewhat cautious about more appropriate criticism.

In German, another variant, though considerably less popular, for referring to people in a gender neutral fashion is by "Englishifying" it and referring to everyone the same by appending a -y to the word stem.

Singular male/female/non-binary student? That's a Studenty now. A group of students? Studentys.

I hate to say it but this is my favorite variant because it gets rid of gender altogether in a concise way and sounds silly. Still, it too violates a shitton of rules - but what are rules, if not meant to be broken?