Here’s a link to an article responding to Webster’s addition of they as a gender-neutral pronoun that I thought you might find useful.
And here’s the article lead:
There has been a cascade of recent news about the use of ‘they’ and ‘them’ as gender-neutral pronouns. These stories provide a useful teachable moment about the importance of pronouns and in understanding people who are non-binary. Evolving knowledge of pronouns is a result of our society becoming more aware of gender identity and expression.