Was he asked his views on this or did he just come out and say it? If someone asked him then I don't see the problem with voicing his opinion. Gandalf said gays have right to be angry that pacquiao thinks that way. No they don't. They have zero rights when it comes to how a person thinks, unless being part of the thought police is now everyones natural right.
I disagree with what pacquiao said - does he now have a right to be angry with me? Its ridiculous.