The product I'm working on just happens to rely on WebRTC, and this means that we can use the tremendous facilities provided by WebRTC-era browsers. Except in

The product I'm working on just happens to rely on WebRTC, and this means that we can use the tremendous facilities provided by WebRTC-era browsers. Except in extreme cases (2-20MiB SPAs), the frameworks save very little labour on a decent modern browser. Furthermore, the frameworks will distance you from the subtleties that make the difference between a polished application, and a document desperately hoping to be seen as an application. I can't tell you how many times I've interacted with an application and thought it would be infinitely better if some of the elements had "user-select: none" or "user-drag: none".