I am a supporter of free speech, he is entitled to his own opinion, it is not breaking the law. But it looks very bad in the inclusive rugby community and to pretty much everyone in society, bar the odd religious zealot.
I wouldn't be surprised to see someone like Toulon put in a megabucks bid for him.
As the statement says, it's nothing to do with his beliefs or opinions, it's that rugby doesn't believe in hating gay people. So he'll have to go somewhere that it's ok.