I don't see why it would. As the author said, featurettes are traditionally shown before the movie & this was clearly advertised. This gives movie goers a chance to ask about it if it is that important to them. That seems like there's enough inertia for people to expect it to be before. Theaters also want people to show up early before a movie's start time so there's a higher chance they get hungry or thirsty while they're there and they also want people out of the theater asap after the movie so they can turn the theater over for the next showing or go home. If they get to start early because people are leaving during the credits, even better.