He answers his question within the first couple of seconds. He said "We have evolved, we humans, to find certain things sexy". But Star Wars is supposed to be taking place "A long time ago in a galaxy far, far, away..." Ergo, we have not evolved as humans quite as far as today.
Perhaps people back then wouldn't have truly trusted the Jedi. Someone who can manipulate your mind or pick you up and throw you across the room or force choke you would cause people who can't do those things to not trust them enough for a relationship. Let's say a Jedi marries a non-Jedi. A few years into their marriage, non-Jedi nags about how the Jedi forgot to pick up milk on the way home from the Jedi Temple, an argument ensues, and the Jedi snaps and force strangles the non-Jedi. Not only do we have another broken marriage, but we also have a dark Jedi running around giving into the Dark Side of the Force. Mass hysteria.
