Comment by cess11

It comes with the XML territory that things have versioned schemas and things like namespaces, and can be programmed in XSLT. This typically means that integrations are trivial due to public, reliable contracts.

Unlike your average Angular project. Building on top of minified Typescript is rather unreasonable and integrating with JSON means you have a less than reliable data transfer protocol without schema, so validation is a crude trial and error process.

There's no elegance in raw XML et consortes, but the maturity of this family means there are also very mature tools so in practice you don't have to look at XML or XSD as text, you can just unmarshal it into your programming language of choice (that is, if you choose a suitable one) and look at it as you would some other data structure.