Indeed -- as I conceded in my original comment, some MBAs are smart and my experiences are anecdotes. Conflicting anecdotes certainly exist. However, the person I replied to stated that he/she did not understand why it was common to dislike MBAs, and I shared what I think is the primary reason.

Fully agree that YMMV, but generalizations are useful tools as long as we don't take them as absolutes.