I feel that the designation Boomer covers too broad a spectrum of years. The heart of the Boomer generation was from 1947 to 1957. These are the people that would have experienced the changeover from a moral Christian drug free society into the very opposite.I think it depended on where you lived. Remember that in the late 1960's, things in large cities had already fallen quite a bit. Look at the famous homosexual riots in 1969 in NYC. Think about Woodstock and the heavy marijuana use in cities. I think the silent generation has escaped a lot of blame when many of the hippies and most beatniks were members of this generation.
Also, think about the 1920's in large cities. There were a lot of issues with crime, prostitution, and even drug use. Berlin, Chicago, and Paris were known to be quite degenerate.
The Hays code was created in response to degeneracy in movies. This code definitely helped keep movies clean and is likely a reason the quality of movies was pretty decent at that time.