Its actually a perfect marketing strategy.
Since he is telling the truth about supplement companies, then he must be an honest guy. If he's an honesty guy, clearly his supplements are the reason why he looks like that. That is how people will see it. Its reverse psychology. They will stop by all the other supplement companies, and buy his supplements because he speaks the truth. And only a guy who speaks the blatant truth would make the best supplements out there and not lie to his customers.