Sure everyone could learn about $path with a little research but there is SO MUCH to learn to get started with a "simple" react app... It's not necessary.
Great tools hands a "low floor AND a high ceiling" meaning it's easy to get started and possible to go really really far.
Clearly tools like replies show there's a desire for easier to set up environments.
Have you never wished you could save your css tweaks directly from chrome dev tools?
Why should the browser show you the page source when you could just curl it? Well... Let's try to make the unimportant things EASY so we can focus on the useful parts.
Firefox could absolutely come with a standard node server and editor. And it could integrate with providers like GitHub or netlify.
Gatekeeping getting started benefits nobody.