Another factor is the increasing focus on work from home, and remote learning.
The less "forced" in-person interaction you have with a wide range of people, the less practice you get in developing the social skills that would be useful in navigating relationships later in life.
About the bear...
So, I'm just assuming we've all seen the discussions about the bear....
In the age of relentless online pornography, chatrooms, sexting and smartphones, the way teenage boys learn about relationships has changed dramatically ( www.theguardian.com )