[doteka]

I have been working with various SPA frameworks for about 5 years now, from the bad old days of AngularJS to mostly React nowadays.

Your comment about 1990 seriously rubs me the wrong way because it seems to imply React et al. actually does something to address the points you make. It does not, at all. You still need to test your code on every viewport you support. And now you have to deal with an insane build process that rivals some C++ projects while doing it.

And there is absolutely an objective argument that staying close to the web platform is preferable than 200 layers of leaky abstraction and a 10MB uncompressed bundle of transpiled JS. The language itself is pretty okay in 2020, certainly not worse than anything else from the TIOBE top 10. I would definitely say writing a bunch of plain JavaScript is all that’s needed for most applications out there. If you can’t manage that without a frontend framework, the problem is certainly not with the platform or language.

[chrischen]

Yes you still have to test your app on different platforms and browsers, but the point of the build process is that they make them work on those various platforms, whereas before you would have to manually fix those failed tests and hack in fixes for obscure conditions. That's what frameworks and libraries are for. They've abstracted away things so you can focus on higher level things. Tests are always going to be required, even if your framework and libraries are perfect.

We don't need to stay close to the platform because abstractions allow for more advanced applications. That's why most web apps don't use C, and should never use C, because 99% of the coding work is higher level tasks that don't need the bare-metal performance optimizations.