In one sense, lots of fats might be good for humanity.  Bear with me; this is not sympathy.  By being fat, a person basically is letting his or her own stupidity remove him or her from breeding eligibility, or at least lowering the potential of breeding.  If there were any truth whatsoever to that bullshit, "muh genetics" then it would be a self-righting problem.  But the truth with fat people and genetics is that the only thing about genetics regarding their affliction, if anything, is that they are possibly genetically coded to be stupid and / or lazy.  Still, then, if being fat lowers their chance of breeding, it lowers the chances of them passing on whatever is wrong with them. So I think the shitlord will rise again.