> "XML is bad" is still one of the worst engineering arguments.

It’s reached meme status. I think most people conflate complex XML-based _formats_ (e.g., WSDL, XSD) with XML _the format_. The rules of XML parsing can fit on a notecard. And a basic parser that supports all the core functionality plus namespaces is really not that complicated to implement. Now, implementing schema validation, Xlink, etc. in your parser is definitely not simple. But to make a simple XML parser those are optional bits.