1 - if you don't understand why it is important to be browsable with light/lean/noscript/basic (x)html browsers, why do you want me to tell you? That said, I should read for good how they did define the <video>/<audio> HTML elements for the various types of video/audio content (HLS, rtsp, etc) in order to configure automatically and properly my media player.

2 - Well, I am currently working already on, what I think, are more critical projects, but "never say never". Currently, I can manage to "view"/browse twitch or youtube live without the massive browsers based on blink/geeko (financed by google, a vanguard/blackrock company via alphabet) or webkit (financed by apple, a vanguard/blackrock company), I just cannot have an account(I get the ad breaks) or chat(for the better actually).