Earlier quoted context omitted.
I'll take a conversational email with sms shorthand and emojis explaining a bug effectively over the business major crap emails I get 30 times a day complete with greetings, farewells, oxford commas, correctly used semi colons that don't actually tell me what the problem is or what the repro steps are.
Have we arrived at the place where we have to choose one or the other? Because I choose option 3: where people do their jobs relatively well, with some amount of professionalism (which I used to think was a necessary, but not sufficient, part of doing your job well).
A lot of what is called "good writing" is really just a collection of signifiers that don't have anything to do with expressing ideas clearly or succinctly. There are plenty of people who would die before ever writing "y'all" but would gladly take 7 paragraphs just to get to the fucking point.
GP is describing a preference for clarity and succinctness over those signifiers.