I have just requested an exception to
Rule 32: "Posting multiple posts in a row (excluding bumps and reserved posts by the thread starter) is not allowed."
I request to the moderators not to merge this post with the previous one, by its lenght to make things clear. These are obviously not shitposts and I do not do it to get paid more because this week I exceed my posting requirements.
I know you said you don't want to comment on this specific case, but I think it's cases like this why the rule exists on an unofficial basis. Sure, it's not the biggest deal in the world to answer multiple questions with multiple posts. I'm sure many of us have made this mistake in the past causing a post to be deleted (when maybe merging it would be the right thing to do). There are plenty of people who abuse this though and bump their own threads this way, which is why it exists. It isn't that big of a deal to just edit your prior post and add information. That's what the edit button is for.
As far as other unofficial rules, I think a case by case basis is what makes them unofficial rules.