Re: Why not save the planet at the same time?
I agree that parsing isn't necessarily the biggest problem.. but my point is that small efficiency changes have large ecological impact simply because of the numbers involved. If we could save just a few percent its still a shit load of fossil fuel.
Agree banning cryptocurrency would be a good move too!
As for backward compatibility... I didn't suggest removing the existing stuff, merely that it be allowed to die gracefully like Flash, Applets, Silverlight, Gopher, etc etc etc. i.e. Design a better thing from the ground up and not try and morph the old stuff into an even bigger compromise.