It always cracked me up how country, jazz, and opera were also chock-full of stories of extramarital sex, alcohol abuse, and violence, yet by the '80s none of those were of interest to the self-appointed prosecutors of their deity's musical laws. Just the loud stuff with the long-haired fellows playing little squiggly notes on the oddly shaped guitars.
That's still the case really. Only insert rap and pop.
Look at top 40 radio, geared towards tweens, teens, and young adults. You have pop tarts like Arianna Grande and Miley Cyrus prancing around half naked in music videos and singing songs about sex. That's OK, but not the rock / metal guys from back in the day.
Rock has become so watered down and sanitized that no parent group would dare question it today.