What's changed, honestly, is the level of narcissism. The requirements were much more draconian 50 years ago. To go to school, you had to #1 actually go (there was no homeschooling for people who could physically reach a school) and you had to have your shots (no exemptions). That's the way it was. People's expectations have changed. In some ways, these changes were a good thing. A lot of evil was done by the authorities in the past. In other cases, it just opens the door to more chaos, which could have some harmful effects here and there. Like, for example, if you kill enough policemen, some of the quality of life you take for granted today would be normal in the future.
In the past, it could have been perfectly normal for people to refuse to get vaccinated until the vaccine was approved by the FDA. that's not crazy. But we had no social media back then, so it would have been pretty strange for people to say it was all a hoax, or all this dumb "what about this" stuff you see all over social media. In the past, organized efforts to stoke fear and ignorance was how people like the communist party had to operate. You had to send chain letters back then to spread an urban legend. Lots of work.