Well, you would be surprised how many things on the list are not obvious to the average first timer, even the items falling into the area of crime.
For some of my friends, a bar fight, or threat of one, is just called "Saturday", nothing serious, more male bravado than actual contact....but things can escalate quickly. Same with the mugs, can't tell you how many people view the mugs as a "souvenir", like little bottles of shampoo at the hotel.
Same with dancing on the tables, if you see people on the benches (half the crowd sometimes) some will think it logical to go one better.
I actually disagree with the info about the ribbon, it is useless and as apt to get you into trouble as not. It might work in a traditional environment where everyone respects the cue; but as many women are likely to "mis-tie" the ribbon and as many men to misinterpret the "sign", leading to problems.
All in All, the list does little harm, a good reminder, unfortunately, given the info about the alcohol content of a mug of Oktoberfest beer, much of it can be forgotten in the heat of the moment.