[twic]

The JSON specification [1] states:

> An implementation may set limits on the length and character contents of strings.

So this length limit is not a source of incompatibility with JSON.

[1] https://datatracker.ietf.org/doc/html/rfc7159#section-9

[eatonphil]

Wow! That makes it pretty hard to know you've generated useful JSON especially if your goal is to for cross-ecosystem communication.