I'm not arguing for proper grammar or nit-picking rules, especially in our informal setting, but as someone who has to pass exams on those higher registers, I have no option but to know those rules. veen is/was in the same boat, hence the comment. Examinations aside, from my experience with foreign languages, it's heaps more important to know vocab than grammar beyond simple tenses/conditionals, but even then, communication will be predicated on other's willingness to go along.
I'm not saying you are. I'm saying that any official case against grammar beyond the most egregious is made without standing. I literally had to google "list of adverbs" because my brain does not think taxonomically when it comes to words. "Speedily-painted" "roughly-hewn" "viciously-sharp" are all perfectly acceptable English constructions. Not that it matters. I seriously doubt grammar has been accounted for in Dall-E in the way we're discussing - it's just got a gazillion Markov runs through a huge dataset.