There was a time when the "traditional artists" called Picasso's work "crap". Times change. No one likes change. It's uncomfortable and it's threatening. The digital medium makes it possible for a lot of people to create some fairly good imagery, without the benefit of the traditonal tools. This has to be threatening for the 2D purists. There will come a time when digital artists will feel the same way about the next "new medium craze"....whatever it turns out to be :)