I wrote a powershell script to parse some json config to drive it’s automation. I was delighted to discover the built-in powershell ConvertFrom-Json command accepts json with // comments as .jsonc files. So my config files get to be commented.

I hope the programmer(s) who thought to include that find cash laying in the streets everyday and that they never lose socks in the dryer.

Wouldn’t go that far, but it’s an annoyance for sure.

IIRC, the original reason was to avoid people making custom parsing directives using comments. Then people did shit like "foo": "[!-- number=5 --]" instead.