[chrisza4]

What does obsolte mean actually? Today you still can build web app by jQuery.

Obsolete does not mean you cannot use your knowledge anymore. It means that community are shifting interested into new thing, maybe for better or for worse.

In this case, I do not think stick with JQuery or old framework for 5 years is productive for programming. If that happen to any community I would say that is a downside, not an upside.

Except for that fact that community and newly graduated junior developer are ahead of me in something. I can live with that