He paid his money to take away some rights from some people. He wanted a certain group of people to not have the same status in society he himself enjoys. That goes beyond expression. That's using your money, effectively your power in society, to step on some elements of that society.
He used money influence to deny homosexuals their human rights and dignity. I don't know what definition of "discrimination" we're using here, but that's pretty despicable behavior by any measure.
