My grasp of grammar is rudimentary - so this may be a fundamental misunderstanding...(and here comes the)...but...
if the purpose of a pronoun is to replace a person's name or descriptor in a conversation when the person is not there then why is it important?
The person to whom gender is important is absent and not part of the conversation, so, why are specific pronouns relevant? The person will never really know whether their preferred pronouns are used, respected, forgotten or dismissed.
I really have tried to understand, and have drawn a blank.