Comment by jermaustin1

As a web developer who's first paid web site was in 1998 when I was 10-years-old, my favorite thing to do in my spare time is build web frameworks that I will never use.

- I've done CSS frameworks that replicate most of bootstrap that I use.

- I've made client-side reactive web-components (kind of) that almost replaced the parts of react that I like.

- I've built bespoke HTTP servers countless times since the VB6 days.

- And I've written my own MVC engines probably a half dozen times, just to learn a new language or library.

All of that to say, it isn't web devs who are threatened, it is developers who don't want to learn the underlying technologies that power the libraries and frameworks they use.

I actually see no fault in being that way. I've know tons of decent-to-good developers that have no desire to understand HTTP or Vanilla JavaScript, and they still do great work tying systems together. It's all about the kind of learner you are. Do you want depth, breadth, or a mixture of both (but always lacking in both - aka me).