It's not society, it's tourists. Even the smartest and wisest among us turns into a no-brained baffoon when they become a tourist. It is human nature. CM's are not dealing with normal day-to-day people, but rather day-to-day people during brief times of the year when they let loose and are at their absolute WORST. Don't ask why it happens, but when the work shirt goes off, the shorts & flip-flops go on...the brain checks-out.
Years ago I used to work in the town of Gatlinburg, TN doing a hotel/motel job. It taught me a lot about human behavior, and what becomes of normally intelligent people when they become a tourist. There were so many times I asked my manager: "Do these people pay bills, feed their children...FUNCTION??" after some of the most idiotic, mind-boggling questions or behavior imaginable. It's all part of the tourist persona, and I completely understand the frustration that CM in the video was feeling.
Those people seen in the video walking through the aisles after the CM had repeatedly told everyone to sit down...they are most likely very smart, educated, hard working normal folks outside of the one or two weeks a year when they mentally check-out and become tourists.
Disney CM's, Uni employees, or anyone working in the travel industry have to put up with society at it's dumbest...and I feel for & respect them all the more because of it.
As bumper stickers have been known to say back when we lived near the Gat/Pigeon Forge area of eastern TN: "It's tourist season...can we shoot them?"
I hope Disney mgmt cut the CM in the video some slack.