no, we downvote things that state an opinion as fact without even an attempt at explaining why, especially when done in a tone that is aggressive and disrespectful.

It's not an opinion however. JSON is a standard. Kinda worries me professionals use it without having a clue.

That JSON has a "good reason" for disallowing comments is an opinion, it could be a popular, well-known and established opinion or it could be completely uninformed. To know the difference one must explain it.

Also standards change, and professionals use their tools in ways the original creators did not imagine a lot, that doesn't make them clueless. Heck, even JSON is a result of professionals misusing a programming language syntax for a serialization protocol.

Your opinion that all opinions must be explained up front was not explained up front.

The reason why something did or didn't make it into a standard are definitely opinions. All sneak had to do was to provide a link to the "damned good reason."