With respect, I think you are speaking from the position of someone who has known how to use this technology for so long, he has forgotten what it was like not to know it.

Take your "90% go to for web" stack. You'll need to know:

    * HTML
    * CSS
    * JS
    * Ruby
    * SQL (maybe)

And then the frameworks:

    * Rails
    * Bootstrap (or equivalent)
    * Vue (or equivalent)
    * Webpack (or equivalent)

And then the deployment:

    * Web server of choice
    * Database setup
    * Linux sysadmin
    * AWS

There was a front-end dev guide linked on the front page yesterday (https://github.com/kamranahmedse/developer-roadmap). Just...look at it. Count the pages. Even if you stipulate that you already know Rails, the rest of what you need to know is still a huge wall to climb.

And sure, by now, you have all that knowledge in your head, same as I do. (Probably better; I always hated web programming.) But asking somebody new to scale that wall just to join in with the supposedly open web? Seems a little much.

And I'm still pretty confident that I (with Anvil) would deploy a simple application faster than you (with Rails). Not because you're a bad developer, but because even with all your knowledge you're still navigating that stack - and deploying it, and debugging it, and editing it without autocomplete because no IDE can sensibly autocomplete a system with that many independent layers, and so on.