I think the evidence that he was a hopeless boy loving pedo is far beyond any doubt.
So he was a complete POS as a person, and deserved to be castrated, and worse.
I won't deny his talent though, even though its not my style of music. I'm much more the Black Sabbath, Hendrix, Halen, GNR kind of guy ,, But I can listen to some of his songs without wanting to destroy the radio. To save my life I could probably name 6 or 7 of his songs, and they are some catchy tunes.
They were more gimmick than anything in the Motown days ,, But again, success is hard to argue with. He advanced as a talented writer and performer, his sales volume speaks for itself.
I hear people say "Oh yeah, Elvis really sucked, and the Beatles were way over rated" ect ... [I happen to like both of them], I'll just say "Yeah Ok, you go out and sell 125,000,000 records, then your opinion might mean a little more".
Same thing with MJ.