I think that grammar does not get discussed often here because it's a subject which is very prone to causing offense. If I want to get under someones skin quickly, I skip right passed politics and religion. I correct their grammar or spelling. We really only see these corrections made (even correcting typos) when the writer specifically requests that service.
Case in point, just last year in these forums, someone gave the bad advice that the singular usage of "they" is grammatically correct. It isn't. I pointed that out and explained why there might be confusion on the matter. One of the younger creators flipped out. He sent multiple responses both public and private stating that I had deeply hurt his feelings, that I was just plain wrong about my statement of the facts, that I willfully and rudely ignored everyone else in the thread, and I was being generously offered a chance to apologize. I more precisely quoted my references: the Oxford New American Dictionary, the Chicago Style Guide, and the Associated Press Style guide. He just gave up on me and probably wrote me off as a bigot who hates all lgbtq+ people. If anyone is wondering, the AP as of 2017 recognizes the use of a singular "they" as optional in informal writing and never in formal writing. Amazingly, I had been one of the biggest supporters of his comic up until then! All of that happened when I did not even correct anyones grammar, just corrected a bad correction.
I am an editor, and I am not certain if I used "passed" correctly in the first above paragraph or if that was supposed to be "past."