IMO JSON is less readable for this kind of document. XML is more explicit (at the cost of being chatty) but it's actually good for markup. For example nesting is easier to visually manage with XML due to tooling and explicitness of closing tags.
JSON is good for smaller objects you normally use during coding where you do not want the format to get in your way. Here I actually do want a very explicit format as it's the main thing.
JSON is good for smaller objects you normally use during coding where you do not want the format to get in your way. Here I actually do want a very explicit format as it's the main thing.