More generally XML is so thoroughly out of fashion that it is perceived as driving resume-driven architecture backwards in time, into an unfamiliar "dark age" of deliberate engineering decisions.
XML has a DOM API. And most people use JavaScript in a browser to manipulate the DOM. So I would say among all the language it should be the JavaScript devs that are the most proficient at the DOM API.
Once you have learned the DOM API, it’s pretty much universal. Things like Document.getElementsByTagName not only work in JavaScript but also in Python: https://docs.python.org/3/library/xml.dom.html#xml.dom.Docum...
> The era of XML is in the past.
Which is about as deep as it seems to get. My suspicion is that the reason people don’t like it is because it’s a bit of a pain to work with in JavaScript