If it was heads up it would have been different, but this is 3 handed, and it is definately not ok to advice other players how to play their hand. He might get a penalty for it if somebody mentions it to a floorman. I'm used to people trash talking and live tables now and then, and I don't care about that, but when they are breaking the rules in this manner I'd definately say something, and if he kept doing it, mention it to a floorperson.