W3C only do web standards: HTML, XML, CSS, XSL, etc. According to ECMA International, they maintain JS. But I'm not sure, each browser does it's own thing.
EMCA International develops the standards for EMCAScript The Language, which is commonly implemented by browser vendors as Javascript. They have jack-all to do with how DOMs are implemented.
This is a little like complaining to Guido van Rossum because of a perceived flaw in Django.
