Folk songs are lessons in how attitudes have changed, and how clueless people in general were in the past. We hope we learn, and society gets better, not worse.
Someone once said that folk songs weren't history, but illustrated how people felt about historical things. I
remember "The Knight and the Shepherd's Daughter. Where a young woman was raped by a knight, and when she pointed him out to the king, the king commanded he marry her.
The thought that this would ever be a just outcome is stupid and horrific. What woman would want to be permanently attached to her rapist? The thought that people, once upon a time, would ever think it was good?!
Times change. Attitudes change. I may not agree with what's in songs. I may not like them. But I think it's good to remember who we once were.