It definitely makes more sense to give the Nobel Peace Prize to Greta Thunberg than to Obama. Like him, she’s done nothing for peace but unlike him she hasn’t bombed out any countries or started wars that led to genocide.
Let’s conduct an experiment: who deserves the Nobel Peace Prize more, Obama or Trump?
How about Trump or Bush 2?
“Neither” doesn’t work because it’s total chickening out not to notice a difference between a guy who bombed out whole countries and a guy who didn’t.