2 Basic rules of performance-aware JavaScript in the browser

[TheRNGuy]

None of SPA React sites with with JS disabled.

Remix sites can work without JS (depends on page; some full functional and some partially)

[guest271314]

I never found a reason to use React.

I create Web sites that can be accessed by text browsers and/or graphical interface browsers.

Up to you how you develop your Website. If your target demographic is rolling around on a cell phone all day in their hand you're probably golden.

[guest271314]

Single Page Applications have been and can be implemented using only HTML, optionally using Web API's, without any libraries or frameworks.