Since Fil opened a webkit bug to implement wasm, I would at least hedge my false-dichotomy bet and avoid getting my mad on. Free advice, take it or leave it.
(The first paragraph is actually me telling you pretty much what happened. Same thing as with WHATWG launch in 2004, BTW. Does not mean "OMG there is something WRONG and only TRULY SHINY COMPANY noticed and OBJECTED". Yeesh.)