I'll never like it, it lost focus too much imo. Hey I didn't even mind when Samurai Champloo did it, nor Casshern sins, nor michiko to hatchin . In fact I loved those. Proxy just seemed really artificially "deep" to me. It's like the director wanted to put some random arbitrary hidden subtext in ever scene and none of it worked, nor was it ever relevant.
I know I'm not being terribly clear vocalizing how I feel about it, but best I can say is it felt very manufactured and not like a natural story.