People have been parroting this nonsense for years. You have WebGL etc in the browser now. Web "pages" aren't pages anymore, and there is no way to enforce semantically meaningful markup. All that's been accomplished by fighting against the future is to ensure that all these low level services were implemented poorly. You can have all your high-level, common concepts but they need to be built onto a layered system. What we have now is a laughable mess, and it proves that the browser vendors have no idea what they're doing.