Any standards can be called 'hypocritical' by an antagonist. Hypocrisy wasn't 'found out'. Hypocrisy is in itself a moral judgement on others by someone pretending to be God. It does give a person a sense of superiority to throw the hypocrisy word at another.
Having respect for manners is the social oil that make civilized life possible. I remember still standing up if a woman entered a room in the 1950s. It's what I saw other men do, so I did it. You don't consciously analyse these things at the time. I still open doors for them. It comes back to that policy re-discovered in New York about " Zero Tolerance". If you want a society to work in a civilized manner you have standards and enforce them by example.
The reason they slipped away without notice was not because somebody discovered they were 'hypocritical' but because in the late 1950s music became the medium through which very young noisy men with guitars could get attention and fame, and not the mannered young married men with respectable jobs trying to bring up a family. Manners, respect, all that disappeared overnight. There were complaints but they were shoved aside by screaming hysterical girls. All respectability as we knew it died. I've seen girls take their nickers off in front of everybody and throw them at the players on stage. You'd see then go through the air like snowballs. By 1960 the whole world had changed. Music, then the Mary Quant mini-skirt..and didn't that cause a stir. Hedonism was the go. Manners...what are they?