No, I don't think he's equivalent, but let's not give him a pass here. His ideology lead to excusing and lauding a group of people who wanted to slaughter anyone with education and reduce anyone else to starving farmers. And he didn't do himself any favors afterwards either, sulking and attacking people who pointed out that moral failing, even circa 2000's.
We tend to trash people for that sorta thing, like we do for Kissinger, but since it's Marxism/Communism it's given a pass by media/left groups. Their are still a lot of puff articles for Chomsky/and his similars every year. The imbalance in how we talk about that era in certain circles is a bit nauseating.
Anyway, the Intercept is trying to obscure their favored ideologies excesses, and reassign blame to their ideological opponents. That's why the intercept is specifically titling it "killing fields" to usurp the other known quantity of the Khmer Rouge's massacres, and focusing exclusively on Kissinger. I've heard way too many people blame solely Kissinger as responsible, as if pol pot did not exist, to give the intercept the benefit of the doubt.