The definition of arrogant generally goes something like this: "Having or displaying a sense of overbearing self-worth or self-importance." The arrogant individual, dictionaries tell us, display "a feeling or assumption of one's superiority toward others."
Sounds like Karl Rove is spot on when he describes That One as 'arrogant', because he truly embodies the definition of the word.
If the author of the article thinks it's code for 'uppity', it must mean that the AUTHOR thinks that about That One.;o)
Uppity to me is just another but not as strong way of saying someone is arrogant.
Uppity to me is someone pretending to be what they are not and behaving in a stroppy manner.
To use a very old fashion comment someone who is above their station and assume they are entitled.