We live in a culture of transparency where you are rewarded for confessing your weaknesses. At the time people tackled their issues outside of print, outside of public discourse. Just because there's no record of a person's private life doesn't mean it was taboo. It's just not for you to know about.
I suspect they are talking about pop culture which is awash with drama.
But it always has been, just less self-important/self-reporting drama (x is getting divorced because they told us!), and more ‘we just found out x celebrity is getting divorced’.