Using print as an example of good high resolution design is interesting, but it misses one of the main reasons we have drop shadows and fake textures in non-print design.

Drop shadows and textures provide affordances and a visual language to communicate what a user can and should interact with on screen. They provide a visual hierarchy to the user so they can easily see what is content and what is interactive, etc.

Print has no interaction, so it's a bit naive to say we're going back to print aesthetics. We need a new way forward that provides both. Web apps have been experimenting with this for a while now. Some of these ideas work, some don't, but we can't just pretend print design has all the answers.