Is it that "when men in general are between 20 and 50," or is it "the specific group of men who are now between 20 and 50?"

The article seems more focused on the second, having interviewed 500 specific people this one time. I wonder if there's something different about this specific cohort, or if that's just what tends to happen to men in that age group.

I've read fiction my entire adult life. I'm 50+ male.