Although I have distain for the drawing elements of html5 (not what markup languages are for -__-), that's just an idealogical stupid thing
Yeah, we certainly don't want to move towards a more universal language that doesn't rely on glitchy, memory-consuming plugins like Flash.
edit: Plus, saying that drawing (I'm assuming you're including game design as a whole, not just animation) shouldn't be done in HTML also completely undermines the validity of Wyatt's entire project. Which is lame. That shit is cool.