I was reading

Some JSON texts are denied by a compliant YAML parser but accepted by a compliant JSON parser. YAML keys are limited to 1024
characters,[10] while the JSON specification says that "an implementation may set limits on the length and character contents
of strings."[11]

I think this is not true. Only plain keys are limited and JSON must always use double quoted keys.

If this is the case, would somebody like to take on the task of removing that paragraph. (Wikipedia and I have not mixed so well in the past.)

I think there are people who want to claim that JSON is not a complete subset of YAML.

Cheers, Ingy