Just my understanding of things, but the entire SE network was created to inspire strictly answerable questions1, as at the time there were innumerable options for open discussion but it was often difficult to get good answers to the original question or to find good answers from identical previously answered questions.
Your last paragraph:
I'm hoping to start a thread about some possible settings for typical
WordPress websites, with a special nod toward cloud servers or
non-shared hosting environments, keeping in mind that these settings
should be adjusted depending on your expected traffic levels and
otherwise...
There is no answer to this, because it isn't a question. I, too, would have voted to close the question had I discovered it before it was closed and without any knowledge of whatever else is going on in comment threads or other SE network sites.
The vast majority of links you submit in comments are asking specific questions, as they state specific problems, current configurations, and desired end-states.
However, as SE sites are essentially community-moderated, enforcement of policies is not always consistent, with there being off-topic questions that were not discovered by enough users with moderator privileges, or the questions were asked very early in the formation of the site before various policies were enforced by community moderation.
1 Software Recommendations is obvious outlier, though properly used can require specific answers.