On 02/07/2020 17:47, Piper Thunstrom wrote:
In terms of modern English vernacular, singular "they" has been continuously and rigorously treated as inappropriate.
I think you may be being a tad parochial again. I can think of plenty of English vernaculars that treat singular "they" as perfectly appropriate. I don't like it personally, but I've only ever thought of RP (in my British parochialism) as trying to suppress it with any serious effort.