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: 
Honestly I don’t quite understand the need for neopronouns either, but anyone who complains about them as a concept is at bare minimum a complete dork and probably really is a transphobe, it takes like 10 seconds to grasp and start using preferred pronouns for a stranger, it’s infinitely harder to change the pronouns that pop into your head for someone you’ve known for a very long time when they transition publicly, and it’s not like that’s too much to ask for, so then why would learning and using people’s neopronouns be a problem?
I will admit, I don’t like how a few of them fit into the flow of the sentence