This is a very timely topic, and is a growing life or death problem in our society. As mentioned in the video, many young males are in situations where they are lonely, unattached and just not valued. Males are more likely to get trapped inside their own head, they need direct guidance or else they go down the rabbit hole. Or, join up with other aimless young males to share in no-so-positive ways to expend pent up feelings.
BTW Bill Maher is brilliant and doesn't suffer fools.
I've long thought that the active military draft should be reinstated, to give young people an opportunity to serve their country, and derive that sense of self worth, not to mention gain an appreciation for encountering a broader variety of people. IMO this "lone wolf" shooter / mass murderer phenomena has grown exponentially since the end of the draft.
Edit: reinstating the draft would also reduce the student loan debt load....