That's still a huge step back from previous generations, where all kids were expected to find their own way to their parents, whether waiting at home, waiting in the pickup loop, or waiting a few blocks away where it's not as busy.

Maybe you're misremembering some of the details of being a kid, but I know my parents signed forms that told the school that I would be walking to/from school. That was in the early 80s.

Do you have any memory of any kids being held in place until someone came to pick them up after 2nd grade?

I never experience being picked up after school by a parent. Both of my parents worked, so I rode the bus or walked.

What exactly is your problem here though? The fact that kids are kept in a staging area so they are not congregating in the same space that kids that are actively being placed into cars? That's an issue? You'd rather have that area congested with kids not paying attention doing kid things with their friends after school?

Just like Columbine stopped all future school shootings?

and yet, 40+ years later, we still have them