whyamidoingthis is right; individuals insisting on their own special pronouns are, whether intentionally or not, setting up a multitude of traps for the feet of others.
The ultimate, litigious example is JY who is making a life, even a living, from setting up situations where she can pose as the victim and express synthetic outrage before going to law.
She is an extreme, but even the workplace pronoun-enforcers, backed by compliant organisations and authorities, could easily spend substantial chunks of their working day combing emails and reading documents to find outdated or accidental mis-namings to complain about.
No doubt many, even most, will simply shrug and carry on, just like whyamidoingthis and I do. My given name is one of those variants with two pronunciations and two spellings - think Caroline and Carolyn - and my parents in their questionable wisdom, pronounced my name one way and spelt it the other. People who know me from email mispronounced my name on the whenever they speak to me and people who know me face to face misspell my name when they write it.
I have never been cross or indignant or affronted or