It sounds like you're a little older than me but we both see this much the same way.
I have as much interest in useful or interesting new technologies today as I had when I was 21. I'm also significantly quicker at getting up to speed with them and more aware of things like pros and cons and the importance of choosing the right tool for the job than I used to be at that age.
However, if you asked me right now, I'm quite sure that I couldn't crank out a new TodoMVC example in this week's front-end JS framework as fast as a 21-year-old who just learned it can. Since not a lot of people solve real problems or make real money writing toy to-do apps, I don't find this situation too threatening. ;-)
The thing is, I've long since stopped being impressed by this week's front-end JS framework, this week's UI trends and visual design language, and this week's new programming language that looks and feels like C or JS with a thin coat of paint over it. I could get up to speed with them to the point where I too could write to-do apps in half an hour, but to me that's like deciding to learn some new GUI toolkit just to write Tetris or learning some new database API just to write a PIM or whatever we're calling them these days. As you say, these kinds of tools are so ephemeral now that they tend to be very trendy and generate a lot of hype, but they are often popular more because of some big sponsoring organisation than any particular innovation or technical merit.
To me, about the only thing more dull is evangelists for a specific browser (why?!) telling us all about these great new features it has for writing large-scale applications... when the biggest web apps out there still tend to be orders of magnitude smaller than stuff many of us "old programmers" were working on in the last millennium, at which time some of those features actually were quite innovative.
Next week, all these elite young programmers, who are leaving people like you and me and our meaningless track records of building actual working and revenue-generating projects in their wake, will probably notice that MV* is not the only possible UI architecture, that building an application that has to run for years around a framework that has a shelf life measured in months might not be such a great idea, and that JS is actually a very bad and very slow language that just becomes not quite so bad with the ES6 changes and only moderately slow with modern JIT compiling engines.
Just don't tell them that the entire web apps industry probably represents closer to 5% of the programming world than 95% and some of these state-of-the-art ideas are actually 50 years old. Such talk is the stuff of nightmares, and they aren't old enough to hear that kind of horror story yet. ;-)