I think a youtube click is worth something like .001 cents.
Many a little makes a mickle. Count together all of the clicks of his 3 channels ("Rich Piana", "Official Mutant TV" and "5 %ers nutrition channel" or however this shit is called) and you're getting in the high 6-figure range.
Also you get more the more subscribers you have, so I guess he gets around 4 cents per click. Easy, steadily income with lil to no effort (as he would probably be attention whoring anyways, even if he wouldn't get paid).