It's fair to assume that if a brit writes something online, it's highly likely to be a piss take joke. We just don't waste our time writing /s on the end of every sentence
It must be said that the Americans are rather well known for an inability to spot the satire and sarcasm that pervades our conversation here in Blighty!
S/he's wrong, simple as that. "The particular spatio-temporal version of speech that I grew up with is correct, and all others are bastardised" is not a defensible or - frankly - interesting position. Chaucer would find virtually all modern English to be debased; Bede would wince at Chaucer's English; and so on, forever.
Nothing fruitful comes from cultivating arrogance towards the language of others. It is just as much a cherished part of their cultural inheritance as yours is to you.
I find it ironic that you're making an argument about how language evolves in the same sentence that you insist on an awkward "s/he" instead of just using a singular "they" (or if you're Richard Stallman, whatever neopronoun he fancies, I forgot what it is)
And I find it totes ironical that you'd respond to a post advocating against language prescriptivism, and intolerance of other modes of speaking and writing, by trying to pick on variants you dislike. Point goes whoosh.
Also, I "insist" on nothing, you're the only one with a chip on your shoulder about pronouns here.
I agree, getting my comment flagged for nitpicking spelling in a post about nitpicking spelling is very exhausting. Even more so when the person I nitpicked replied to my comment and showed no issue with my nitpick.
Also the downvotes don't really matter, here's another comment if you wish to downvote me again in this post. Ironically my flagged comment actually had an upvote before getting flagged.
Strangely, it's the insular dialects across Britain that have become more bastardised over time. The North American English dialects are far more conservative when it comes to evolution. As this BBC article[1] says: "[...] although there are plenty of variations, modern American pronunciation is generally more akin to at least the 18th-Century British kind than modern British pronunciation. Shakespearean English, this isn’t. But the English of Samuel Johnson and Daniel Defoe? We’re getting a bit warmer."
I've heard more specifically the southern US dialect is probably closest. Not sure how deep or dirty in the south. I have about as hard a time understanding people with the US South accent as UK accents.
The colonies were acknowledged as the offspring of Britain .. the United States of America is more of a chosen fraternity of the emancipated offspring after they fled the control of their former legal guardians.