No. It's there on purpose and rightfully so, although using MacBinary-encoding (that's what the .bin stands for here) for Mac downloads has a bit come of age nowadays, where .dmg is the way to go (and doesn't need MacBinary encoding). StuffIt Expander _does_ expand MacBinary files, and I'm not sure what happens to all those Tiger users that haven't got Expander installed (it doesn't come with Tiger anymore, whereas it was part of all previous Mac OS X installations...).
Mac user since 1987. Running Mac OS X 10.8 Mountain Lion on a MacBook Air 11" & an iMac 27" and whatever's newest for my iPhone 4s, iPad 3 and AppleTV 2.
Apple Certified System Administrator 10.6, Apple Sales Professional 2008-2011, Apple Certified Mac Technician.