"They" has been a gender neutral pronoun since it was added to the English vocabulary....The non-binary use of "they" was added to the definition in September.
The whole country just seems to be a few decades behind it's existence.
They, Their, Our.... All neutral.
Here is the WIKIPEDIA entry for PRONOUN
This seems like a bunch of folks trying to be politically correct and 'all inclusive" - holding up toast and proclaiming to have invented "slightly burnt bread".
Bring on 2020 ...