Canadian Politics Today

https://www.hollywoodreporter.com/features/woody-allens-secret-teen-lover-manhattan-muse-speaks-1169782

So, Woody Allen had a 16 year old girlfriend in the 1970s ?  When he was 40 or so years old ?

Is this an issue ?  Beyond the 'yuck' factor, I want to know:

1) Was this legal at the time ?  (Probably)
2) Was this accepted at the time ? (Probably not, but maybe in some circles like entertainment yes)
3) Should we care today ?

Or is it just 'yuck' ?