doctorow doesn't have a "get rid of everything" position on copyright. i don't know where you got that from. He argues creators should still maintain a monopoly on selling their art.
but back to your original claim, you may not like his writing but you have to acknowledge that other people do. not only does he write, but he does so about important and relevant topics, and from a point of view too often ignored by a large part of society. in the very least, to write him off as a paris hilton is dishonest if not asinine.