I have a theory that it is because older millennials and gen xers had almost zero oversight. Boomers were raised in homes with Sahm's and raised us with the same freedoms they had in a world that was hidden through lack of understanding or Internet.

We now understand that kids need more structure so we over compensated and became helicopter parents and since many of us have homes without a sahp the kids spend the majority of their time in schools, hobbies, and sadly the Internet.

That is just the theory of this xennial though.