No, abused and over-powered browser plugins are dirty.
Quicktime is a plugin, do you feel its presence? Yet WWDC video pages were not HTML5 compatible and using Quicktime plugin.
The same applies to Canvas or SVG, yes they are standards, but their performance will suck worse than Flash if advertisers start abuse animations with canvas. Best part, you can not disable canvas like you can with Flash.
I understand this argument, but I don't believe that this was primarily a marketing war. Browser plugins are dirty, they always have been. It is not surprising that the latest web standards are attempting to plug this gaping security hole.
Furthermore, all of the features you have listed were only implemented because Adobe had a huge financial monopoly on the technology.