That would almost sound altruistic of him. But then again, why does he feel the need to advertise it? Is he getting paid to advertise it so others, who understand the risks even less than he does, accept to become guinea pigs for this experiment?

There's a difference between doing the research yourself and deciding to put your own body at risk "for the greater good" or even "for fun", and doing it because you saw a cool ad/PR story about it. It's why tobacco advertising was banned, too. You don't want the mobs to suddenly "want their genes enhanced, too!"