Exactly! As much as John Hawkins may be correct on his 7 points, I think Krauthammer has the meaning of the nature of the parties / ideologies backwards.
I usually think of liberals as "evil" and conservatives as "stupid" for their inabilities to realize and eloquently convey it. Even armed with the truth and the facts to counter liberal lies and mischaracterizations, most conservatives can't seem to verbalize their arguments or be convincing outside of their own environment.
To underestimate and think of someone evil as stupid, when they simply march on executing their evil plans virtually unimpeded, is, in itself, stupid. Ronald Reagan called Soviet Union an Evil Empire, not Stupid Empire because he understood the true nature of the enemy.
There is a reason that Republicans are usually called the Stupid Party and Democrats the Evil Party.