Absolutely. It's also a reflection of the world it was created in (which is what all good art should be right?) since a lot of the Western-focused artists had to look at art in non-Western forms and what that meant for the definition of art (Picasso), as well as what the decomposition of the "building blocks" of art could mean for it (Mondriaan, Warhol).

I'm not a fan of postmodernism at all, but it's easy to see where it gets its ideals from and why it was the natural next "step".