mocking and quoting bigots I've seen so far
:liberalism: turns to 
"you know it's hexbear when the tankie pronoun parade shows up to force pictures of pigshit in front of you!"* real quick
[*this is paraphrased, I can't remember the exact original quote]
Or "so suddenly I'm Hitler because i think people calling themselves Fae gender is dumb"
Or "why should i need to learn a new set of different pronouns for every person I meet?" (this followed two comments after "I'm literally not a transphobe, I work with plenty of trans colleagues who feel safe around me" (average lib being scratched in real time by having to acknowledge neopronouns))
.
All of these shitheads claimed to be allies when they started interacting but our brilliant pronoun tags immediately made them out themselves as the bigots they are who only pretend to be allies because it looks bad to be openly and proudly transphobic
TL;DR: 
Polish can also use a third pronoun that is rather rarely used nowadays.
Ono, which is genderless or shares male declinations. Most often used for children and animals so many people find it dehumanizing or just insulting. But it's so rare I've never really heard anyone use it...
Kind of like "it" in English?
Yes, but a bit more broad I'd say. But that's rather vauge... Don't know how to explain it really.
Interesting, that's a really neat perspective, thank you!