And I suppose the vast amounts of XML (still!) flowing across the internet show there's no need for JSON at all, so the real mistake was even inventing JSON?

(Also, as gets pointed out every time this topic pops up on HN, including multiple times on the submission already, the main demand isn't people wanting to add comments to the JS flowing across the wire, but to config files sitting on disk. Responding to people saying "feature X would help use case Y" by noting how many people are using it for use case Z even without feature X is logically incoherent.)