Palin could be surrounding herself with the best and the brightest - or not - we don't know and neither does Krauthammer.
To say what he said without knowing the truth makes Krauthammer a person of low character.
Like we don't speculate ourselves about a whole lot of different things.
So I guess every one online who ever made a guess about someone in public life has low character.
Krauthammer's a pundit -- an opiner or opinionator or opinionist.
Once upon a time, that might have meant someone who had special knowledge, but now it means someone who makes guesses and hopes they're "educated guesses" that are right more often than other people's guesses.
Time will tell if he's right this time. Maybe Palin will prove his guesstimates wrong.
But don't hold your breath waiting.
Nobody listens or cares.
Krauthammer on the other hand does it for a living to wide audience. Speculating is fine if you frame it as such. He's stating it unequivocally.