Flash has sucked on mac for years, though improved in playback somewhat last version, and the public beta of 10.1 shows huge improvements. And the new hardware acceleration soon will further improve things.
A lot of the future rests on adobe's ability to respond and deliver, and soon, but I wonder what the flash haters will have to resort to when and if adobe -does- deliver good players.
Make up more stuff to high five about? Well that'd be a huge surprise eh.
The way I see it, flash is really getting a beating in the media with all the 'flash is getting ditched!', when, people are starting to use another delivery method for video. Video, just... video.
Flash had dominance long before they ever introduced video playback in flash 6, which never really came into it's own by flash8. There's no doubt, roles will change, companies will spar, and technologies will emerge, but flash isn't going anywhere anytime soon, regardless of how many anonymous posters make stuff up.