Definitely not. They’ve always been explicitly implementation-agnostic (literally specified as not having any semantics). An increasingly popular JSX transform (used by Solid) has very different semantics. JSX semantics are more like an s-expression than anything else. Code as data, you can do anything with it you like. I use it to make art and render that to meta links on my personal site. You can use it to render CLIs, or even JSON responses on a server.