Would you say if the data format was say JSON, YAML or TOML or any more human and bash friendly format it would have been easy to implement with your current experience?

Not to vouch for having Git store things in human format. But I often think about how inefficient JSON API's and YAML storage formats are (in parse time) just to be a benefit of a user debugging it or discovering the API through a browser. But since most people use a JSON prettifier plugin or a tool like Postman anyways, what is the benefit of the line format being character strings? Wouldn't a binary package not be just as easy translatable into human readable JSON formatted output as a compacted JSON string is?