What gets me is how every person he helped arrest, he gave none of them the benefit of "innocent until proven guilty" that's only for his buddy Danny. He didn't send any letters of support for any of those rapists after they were convicted. He only cares about victims, so long as they're not the victims of his friends.
It definitely is a different story when your (presumably) really good friend with industry connections is a piece of shit compared to just doing the right thing without risking anything, even getting praise for it. He's just a human with maybe less than average integrity who did good when it suited him. Who can really say why they wrote the letter.