It was definitely more acceptable back then, and I suspect that if drugging wasn't involved, we wouldn't have heard much about the Polanski incident. His mistake was attempting to force it, but simply having sex with an underage girl back then was seemingly not controversial. Elvis dated a 14 year old when he was in his 20s. Bill Wyman was another one who was 47 when he started dating a 13 year-old. In the recent glut of stories around David Bowie's death, there was one entitled "I lost my virginity to David Bowie" in which the woman describes how her and a friend had sex with him when they were both 14, and in fact, her friend was known as a bit of a groupie to famous musicians, who would give them drugs and alcohol before inviting them up to their hotel rooms. It's just as predatory as what Adam Johnson is accused of, arguably more so. I think a lot of them got away with it because the girls involved wanted it too, so there were no complaints, and indeed, Adam Johnson probably would have in the pre-digital age, if her father hadn't have found out.