At least in the post-WW2 era, I think this is true. Even in the pre-WW2 era, you could argue that too much emphasis was placed on the negotiators of peace treaties (many of which were more like terms of surrender) than the other part of the definition. I do think that, in retrospect, Gorbachev did deserve it (or at least led a group of people who did so) "for the abolition or reduction of standing armies" by pushing the Soviet Union towards a peaceful end to the cold war. But... awarding it to him in 1990, when the relatively peaceful transition of Russia out of the cold war was far from a certain outcome, meant it was really just luck that they actually got one right. Not to mention that the credit really belonged jointly to Gorbachev and Reagan, but it seems like the Nobel committee has a distinct dislike for those on the political right.