Well, indeed it is more like GL's bad script/dialogue writing than Directing. Hate to say it but I pity Mrs. GL whenever I hear those dialogues.
Although I have to point out that the over-dramatized JarJar scenes are more related to Directing than Script Writing, even with JarJar being a mostly digitized creation.
Then again technically I can say something about some of the bad duel/combat directing in OT also. The dogfight and big battles are fine, but the saber fights shows that they don't have a martial arts weapon expert in the team. While I actually like a less acrobatic fight scene (where the less dynamic movements actually builds more tension), some of their stance position and swing direction are just... amateur.