Now if you want to talk about really bad grammar …
As I and others pointed out, the use of “they” for singulars isn’t new-fangled or bad English. As with a number of other things considered “bad” English (such as American spellings), the only determinant of them being bad is that a committee somewhere dictated what was to be kept and what wasn’t. (Spellings like “color” are very much British and go back a long way.)
No, you just used a construction popular in modern US parlance—which I must therefore accept—but which I find far more detestable than errant uses of “they”.
A more traditional start to your post would have been “If Ralph had framed things as …”
By force of habit, that kind of construction will worm its way into official grammars at some point. But I don’t see why people are gravitating towards it.
I think what we’re saying is that “acceptable” English usage varies from place to place, and things which may be in common usage in one area will grate on somebody from another. But I’m pretty sure “could of” is not regarded as correct anywhere in the UK, even though it’s quite common usage.
So American English is correct if you’re American/in America, and the rest of us should accept it, even if it sounds wrong to us. (And vice versa, of course. )
I can honestly say that I don’t recall ever having seen that phrase in written form. I know could’ve sounds like it phonetically, but I have never seen could of written, always could’ve or could have, with the long form implying greater emphasis on the have.
Yep, @rpkamp is spot on when he says it’s a misinterpretation of “could’ve” etc. It’s an understandable mistake by those who’ve never experienced words in writing—you know, the majority of the English-speaking world.