Custom elements, CSS Namespaces, client side templating, all things that we had decades ago and were just dumped. Abandoning XML and XHTML is and continues to b

Custom elements, CSS Namespaces, client side templating, all things that we had decades ago and were just dumped. Abandoning XML and XHTML is and continues to be the webs biggest mistake. People can pretend there were good reasons to stick with HTML but having "On Error Resume Next" baked into your language was a known bad practice even then... I am optimistic for XMLs future though, as the rise of stuff like TypeScript and Rust shows that people do appreciate strict languages nowadays, and WASM means that modern versions of XSLT can be utilized on browsers even if the browser vendors cannot be bothered implementing them.