i think you mean, why does ATi sux0r...
They've been playing this game for awhile... if you had an older card, the newer MMCs wouldn't install... leaving you with bugs of all sorts and no way to fix them... IIRC, you could trick the MMC into installing by modifying one of the installation files prior to doing the install...
I'm not really surprised at ATi... but I hope someone leaks this version of the MMC, because driver/program updates should be free if you purchased the hardware... there's no excuse for making people upgrade their hardware just to get the features of newer software. They're in the business to make hardware, not software.
HP did the same thing with their scanners... (not sure if they still do) and they make it impossible to just search for the software you want, they make everything seem like a driver or some such upate and it's organized by model... making it difficult to tell what is what...