*Delurks*
I am... Both flattered, and afraid that I will now be in the searchlight of the GP. At least I now know that someone bothered to read my post, although an answer to my question is still nowhere to be found. Thank you for the comment lemmiwinks, it means a lot to me.
The Grammar Police have made it quite clear that they target abuse by people who should know better.
A person using ESL poorly, but making an effort to do so correctly, is not considered a target. In some cases I have seen them help struggling ESLs solve language problems.
Native speakers who use English stupidly are the ones who should be afraid.