Dear Mr. “I’m bad at blog titles“,
Not only are you bad at blog titles, you are bad at comprehending the progressive enhancement philosophy behind building websites/webapps.
Progressive enhancement doesn’t focus on catering to the least capable browser. It simply doesn’t exclude a less capable browser from providing access to all the content housed on the site. Progressive enhancement layers on various features in a responsible fashion in order to provide more capable browsers an “advanced” experience based on the technologies it supports.
The key principle of progressive enhancement is: Restrict no one from being able to get at the content they seek.
That doesn’t mean, make a crappy experience for all because of the lowest common denominator. Far from it.