I know all about the fact that IE isn't compliant with so many things and all of the difficulties it creates. I've done web design before, I'm fully aware of all of that. However, I'm quite sure that trying to view the tremradio site won't crash IE, I'm willing to bet quite a lot that the browser detect is simply a stupid attempt at getting people to switch rather than a legitimate fix for a problem with the site.
I won't go into why I'm not going to switch from IE right now, but suffice to say that a switch can't really occur for a while.