> For me, the most interesting aspect was that it's part of standards, requiring no dependency, so it means that I can use this app for decades without having to maintain it.

Doesn't really make sense because for JS frameworks and for the "pure" component the dependency is the same - browser. If i don't have to maintain a project i can just pick whatever is the current version of React/Vue/Other and have the project running as long as the browser doesn't break/change something.