I remember a lot being made of it at the time, but it was pre social media and everything ran slower, fewer facts were known.
At the same time, and for decades before, there had been the Wild Child and Baby Groupies - all of whom would have claimed to be self guiding, emancipated etc.
As much as we recognise it for abuse these days it simply wasn't see that way as much back then. Yes, eyebrows we're raised, but social mores we're entirely different.
Instead of seeing it as horrendous that it happened back then see it as we, society, have grown up, changed since then and much more if an outcry would raised. And then hope you are proved right, should it ever happen near you!