The Beatles were not fans of these suggestions. John Lennon found the whole thing stupid and used to whip his arms around while doing the bow, a scathing form of protest that admittedly wasn't quite as shocking as throwing a burning condom at the audience. However, the band also realized that having their way would get them nothing but more shit gigs at the same shit clubs. As Lennon himself put it, "It was a choice of making it or still eating chicken onstage."
If they'd had modern fried chicken, the Beatles never would have sold an album.
Of course, cutting out the "holy shit are we edgy!" gimmicks stifled their creativity so badly that of Rolling Stone magazine's 10 best albums of all time, a mere four of them are from The Beatles.
So to recap, first came the haircuts, then came a level of popularity that bought them an unprecedented amount of creative freedom, and then came the albums that changed music forever. A feat that, sadly, no one has ever managed to achieve while working at a titty bar.