I thought you had no desire to show people what a proper sentence was?
If you know what they mean, then why bug people about it? Or ask, "is this what you mean?" If you make like the problem is yours, you're more likely to win people's affection and influence people that way, even if it's NOT yours. Of course this is to an extent, when it's not a hill you want to die on.
Oh gosh there goes one of those silly cliches again...
Incidentally, why should I forget Diamond's post, since it is the one you took issue with?