This sounds reasonable and is probably true in reference to security issues, but it certainly isn't the case as far as standard's compliance and proprietary markup goes. IE is the buggiest browser out there in this regard because MS opted not to follow w3c recs.
The fact that security issues are pushing it out the door (please! please!) is a blessing and certainly a boon to us.
Imagine a world where FIREFOX, perhaps the most compliant browser on the planet, holds 90%+ of the market! Where you can assume that most of your users are on a browser that actually FOLLOWS the rules, as opposed to grinding, chopping, and mulching them up as a matter of course!
I mean, what would we do with ourselves? There will be wandering packs of web designers in the streets, not unemployed but FINISHED WITH THEIR WORK, free of the need to spend an extra seventeen hours hacking to make IE cooperate.