[einpoklum]

Because they didn't "get it wrong":

* They knew about the heinous crimes for which recipients such as Kissinger had already been responsible. (With Obama this is somewhat less of an issue, but he already had a record as US senator and president for a few months; and those did not suggest a future worthy of a peace prize, to say the least).

* They knew those recipients were not penitent regarding their crimes.

* They never acknowledged the awardings of these people as a mistake.

So - they got it right, in their view. It's just that your or my idea of what's right is not theirs.