He has never said anything bad or negative, but publicly broadcasting that your new coach will make you a better person and a better footballer is a sly stab at your current coach.
The same current coach that welcomed him with open arms when he ran from the Dragons after they didn't want to pay him.
The same coach that gave him a first grade debut, got him an Origin debut, got him a Premiership.
The same coach that made him a footballer that was able to sign a contract worth 1.2 Million Dollars a year.
I don't be-grudge him leaving, I respect athletes as they have a very short career without many prospects outside of the game after it.
But he just needs to keep it quiet and let his football do the talking, because IMO, he is very lucky to be playing Origin this year.