Truth is Jellico is exactly the kind of person you usually see in the real world in these types of positions, be it captain of a ship or a civilian position with equal authority and responsiblities. Truth is, at times you have to be a jerk or an asshole to be effective in those jobs. Sure we all love to have bosses who are more approachable and can shoot the shit with, but a lot of the time that's not practical and can lead to more problems than a stern Jellico-style boss will.
On a somewhat unrelated note, I noticed one of the things that article used against Jellico was that he made Deanna Troi wear the "not sexy" standard uniform. But I thought the general consensus was that she looked better in a regular uniform, and that's why they continued to have her wear one for the rest of the series?