> expecting developers to waste time working around all the bugs in those old browsers is just insane
What bugs? The ancestor posts are talking about frameworks immediately using features that were just added to browsers - i.e. more recently than those older versions. Nothing at all to do with bugs. Can you help us to see what you've misunderstood here? Perhaps not dismissing users as "stupid", developers as "insane", and admins (?) as "lazy", would be a good starting point.