Is there a measurable difference in skill, productivity, or programming enjoyment between people who depend on IDEs and those who don't, or is it all just fanboyism?
I don't think you could really get an answer to that. There are so many different ways to measure skill, productivity and programming enjoyment - and all of them are probably very subjective and/or can't be broken down into ONE thing causing it or not.
It's still an interesting question tho.
My personal belief is - it depends on the programmer :)
G-Man