"Guilty of losing patience" is nonsense. If you look at the process by which web standards advance, it requires that two or more vendors have created proof-of-concept implementations, before the standard can be standardized. That, in fact, how standards have always worked.

As a Firefox user, I don't like the results either. But I don't think any of the actors in question are acting in bad faith. Not even the lazy web developers who build Chrome-only games; why should they build shit for me, if they don't want to?