In a few years, designers will start to get tired of looking at and creating flat designs day in and day out. They'll add little flourishes and write blog posts proclaiming "The Era of Living Design", where designs have all the spark and texture of real living things.
I mean, it's absolutely great that these folks are so excited, so passionate about design. But I don't think it has to be so cosmically meaningful for it to be exciting.
And this is not to say that Layer Vault is poorly designed. It's just that it can be a good design without every non-flat design being bad or dishonest.