There is a subjective difference between dated and outdated indeed. For instance, while they are a definite and inimitable snapshot of the era, I would never use the word "outdated" for Deep Purple's Machine Head, ELP's Tarkus, Gentle Giant's Octopus or Yes' Close to the Edge, they all sound fresh to me, but, in spite being a decade less old, I would call most of the electronic music of the '80s outdated (doesn't necessarily a bad thing though). In that sense and in terms of sound, I&W does feel a little outdated to me, but the music is just so good that I came to appreciate it on every level and wouldn't change a thing about it (unlike MP, who would ditch the triggered snare).