I agree HTML5 is very unsatisfactory in tying parsing to markup, but it has an extremely important and redeeming virtue of parsing existing HTML documents in th

I agree HTML5 is very unsatisfactory in tying parsing to markup, but it has an extremely important and redeeming virtue of parsing existing HTML documents in the wild. I agree no one should base a new markup on HTML5, but eh, no one is? You seem to be attacking a strawman there.