This is such a tired reply. The peace prize is not part of the same group as the other awards, and a significant difference in the peace award is that intent is awarded not results.
The dude who invented the MAD doctrine did not get the award despite nuke deterrance doctrice being related to the least amount of wars in any century since WW2.
But his platform of deescalation and his plans for american foregin diplomacy were rewarded. He ultimately failed to reach those goals (specially with the escalation on Afghanistan and the emergence of groups like ISIS), but tbh the Iran agreement and the Pacific trade agreement, killed and buried by the next administration, would have created a massive buffer and solution for the 2 hotspots we currently experience around the middle east (where terrorism is largely sponsored by Iran) and the Taiwan takeover by the CCP (would also be partially neutralised by the Pacific trade talks).
He was naive, in the way the world was naive to the ability to sacrifice prosperity that some leaders are capable of. He underestimated how dumb and suicidal putin could be, he underestimated how much China would be willing to sacrifice in terms of potential, he underestimated how much violence was latent and capable in the middle east. but his nobel peace prize was due to his campaign running on nuclear proliferation treaties and closer relationships with the muslim world which had been entirely antagonistic since Bush