Instead of learning JavaScript frameworks, isn't it better to advise people to learn and master JavaScript itself? I feel learning HTTP, HTTPS, HTML, CSS, and JavaScript inside-out will benefit someone than to try to learn a framework that will disappear very soon. When you know undelying technologies, it is easier to learn new frameworks because they will always be based on underlying technologies.
Learning a framework will enable more participation and contribution _now_. And arguably knowing the framework isn't so important compared to going through the _process_ of learning one; if you know how to do that then you can just latch onto the next up-and-coming framework. But yes, it's certainly also good to master JS itself.
Angular/React/Vue are unlikely to dissappear they've existed for a long time now.
Angular: 3* years *9 if you count AngularJS
React: 6 years
Vue: 5 year
That's a long time by web standards, they also keep up and push native javascript forward.
So yes, learn native JS. Definitely learn a framework though, as those skills are ultimately what you need to work on anything more complex than a simple website.
5-10 years is too little considering the fact that they spent first 2-3 years gaining momentum. Even worse for Angular because it was completely changed along the way. JavaScript knowledge is still relevant even after 24 years. Whatever is on those libraries and frameworks will one day make its way into JavaScript and that will be theur end. Frameworks will come and go. Even the most successfull JavaScript library ever, jQuery, is on the decline because of newer frameworks and features like querySelector.
