I don’t recall players in the 1960’s throwing fits like that in front of a national audience. Players took care of business on the field, not in front of a camera with a mic. Imagine what Vince Lombardi would have done to one of his players if they pulled a stunt like that.
Vince Lombardi would not have allowed his players to grow their hair long or stay out late at night chasing women. In those days, coaches would assemble their players and lay down the rules of conduct: Curfews, no drinking before game day, no arrests for bad conduct and no conduct detrimental to the league. I think the league is moving back to those strict standards.