And why is this a problem? Really is it that much of a problem to support the required icons and images? I really don't think the majority of the complaints surround these trivial requirements. If that is what people are complaining about then I really feel sorry for them.
Honestly folks how long have icons been around? Further over the years how many different sizes have they come in? Bit depths?
I mean really we have people crying in their cereal over the need to supply a few images and icons. It is rather pathetic if you ask me. This is especially the case when you consider all the tools we have today to create such files.
So if your boss told you "please turn in your work as a Word document, and a PDF, and a PDF paginated to legal sized paper, and also as a plain text doc" you'd say "I'd be happy to; I feel sorry for anyone who complains about this."?
Don't get me wrong, Apple did a great job moving us to the retina display. The pixel doubling solution/hack was well done and well implemented. The fact that the only thing developers had to do with submit new images and icons and otherwise the apps just worked and looked pretty was excellent. But it IS a nuisance and introducing a third resolution (which Apple won't do) would drive a lot of us to drink.
My complaint was with your assertion that developers are doing it wrong if they have any artwork that needs to be updated. Unless all our interface elements are supposed to be text or simple shapes, this is just wrong.