Originally it may not have had a political/ideological point, but it does today. And while it may have been common with some, it has been considered incorrect for the last 300 years. Its general acceptance now is directly tied to the push to accept the premise of non-binary. Today that is the context.
Your ‘general acceptance’ notion seems as modern a construct as the gender-bending ideas are. I’m not familiar with this ‘acceptance’ at all, and I don’t think the author of the article meant to use the singular they in any but the centuries-old manner.
I’m finished.
(Someday, let’s argue about the ‘generic masculine’. I use it all the time, and ‘general acceptance’ today probably finds it offensive.)
Thanks for the conversation.