I'm a woman, and in a position that is more often held by men. Is there sexism? Sure. But in this clip, I didn't see any. There may have been other instances that happened during the event, but not from that clip. Editing played a role here. We don't really know if that particular interaction was what Adrienne was referring to, right?
As to Padma's clothes, I fully believe the Magical Elves want to 'sex her up', and may even encourage her to make the overt sexual comments. I thought the dress looked pretty ugly, and momentarily mused about the sheer bad taste of whoever dressed her. I usually pay very little attention to her, as I prefer to concentrate on the people who are cooking.
On another note - my friend asked me a couple weeks into the season who I liked to go to the finale. I picked Adrienne. Go me!