About XHTML2 and IE7

With Microsoft's decision not to support application/xhtml+xml (even 
after promising they would, those fools) will XHTML 2.0 be harder to 
"promote".
http://blogs.msdn.com/ie/archive/2005/09/15/467901.aspx
Won't IE7's lack of the right content type mean almost no one will want 
to use XHTML 2.0 since about 70-80% of Internet users use IE?