People can give him as much grief as they want, but nobody will ever be able to contribute to music the way he did, and I think it's a shame that someone as influential as him is completely disregarded as a musician, and is remembered by people by the controversy in the last few years.
Admittedly, he made some bad decisions, and he was by no means 100% sound in the head, but he was by far the greatest performer ever, and I don't think there will ever be anyone with even a 10th of his talent EVER.