So what, IE6 is still a supported application, because it was an integral part of XP hone and XP Pro it will be on the same support lifecycle as XP which is June 2114 I believe.
So all the wishful thinking in the world won't change that, especially for business.
I have said it before the site that tries to dictate which browser I can or can't use is a site I won't visit, so sod off is my attitude to this high and mighty crud. When someone pulls this high and mighty holier than thou stroke on me, all it makes me do is dig my heals in and vote with my wallet and sod their site. Even though I don't use IE if at all possible, IE6 is still on my system do I feel vulnerable not in the slightest from those with IE7 and IE8 is still early days to say anything.
The problem with your chart that doesn't break down the IE Exploits/advisories by version nor does it give a list of outstanding advisories for a fully patched IE6 so to me this is smoke and mirrors and FUD.
I hate IE for its integration into the OS (I would get rid of it completely), but I equally hate those that think they can dictate what browser people can or can't use. Because before you know it, it will be older version of firefox for those on older OSes and then older versions of Opera or Safari, I think you get my drift.