Well, let's agree that IE10 does well whatever it is designed to do well. Cool. Now what? We have an IE10 browser that compares well with Google Chrome, Opera and perhaps Firefox too (I don't know the exact details about your tests that were making Firefox crash as often as you've claimed in your article). So is this the point where Microsoft takes on the real challenge? Will it go beyond its typical high-speed sales…
IE 6, 7 and maybe 8 users are probably running XP so can't upgrade. IE 9 users on Vista are similarly out of luck. I won't be recommending IE 10 even to my clients on Windows 7 or 8 until they have an silent auto-updater and a frequent release cycle. It's the only way we'll stop IE's user base holding back the web.
I can't imagine someone in their marketing department actually thought by doing so would get people to upgrade their OS so they could have a more up to date browser.