Seriously though, JSX and TypeScript are nothing new. Both were part of ActionScript 3, a big language backed by a powerful company (Adobe). 15 years later, nobody even remembers it existed. How am I still making a comfortable living coding today? By not getting too attached to any language or framework... they are all just tools in the end.

So let the young ones be, time will eventually teach them those lessons, sooner than they think.