People, photographers being included in the group are products of their time. But most if not all the photographers mentioned here did work against the current styles of their time. Adams photos today might seem trite and overdone now. But he took photography in a new direction away from Pictorialism. Arbus' photos were shocking during a time when photos were supposed to be nice n' pretty. She had an obsession with "freaks". She portrayed them as just another facet of humanity.
You know what they say about critics? They're like palace eunuchs? They can watch but can't do it That's what I love about art, they're aren't any rights or wrongs. The worst can happen is you get offended. That means that the viewer has ventured outside of their comfort zone which is good.