Questions that ask "why" are almost always closed. It's a rare treasure that survives. The "extra comma at the end" one is intriguing. Notice that the asker:
- read and quoted from the spec
- anticipated the most common response and refuted it
- left people wondering "hm, good question, why is that?"
Most why questions don't show anywhere near that level of care. They ask hypotheticals with almost no background work: why is true 1? why can't it be 42? why aren't ints 12 bits long? why is bool four letters long, boo would work better? why was the word main used for the entry point? and either nobody cares, or everybody already knows, or it just doesn't matter. The question doesn't engage the interest of the handful of people who might have some information to provide.
Most people with high reputation got that reputation by knowing a lot about their field of interest, being curious about their field of interest, and being generous with that knowledge and curiosity. It's hardly surprising that such a person could, occasionally, ask a "why" question that didn't deserve near-instant closure. I find that far more likely than a herd mentality that lets high-rep people do what they like.
And as for going along with what Raymond Chen says, find me a time when he was wrong on a technical matter and I'll stop going along with him on technical matters. I don't take his advice on what movies to watch or what shoes to buy, but his point about just using the language as written (and the tip to embrace limits.h instead of trying to memorize it all yourself) is a very good one.