There are some low-skill level modern quilts, just as there are low skill level traditional patterns. I think it's a big mistake to say that all modern quilts are lacking in technical challenge. Often the focus of a modern quilt is not on the piecing, but rather on the fabric selection or the quilting or the improvisational approach to creating it. A well made, visually pleasing, balanced quilt in the modern style is by no means a lazy woman's project.
I like modern quilting. I like that it's generally characterized by graphic elements and clean design. I like that it plays around with traditional elements and doesn't always take itself too seriously. That said, not all things calling themselves modern quilts are necessarily modern in style.