Thank you for pointing this out. I did K-12 in the US and it is indeed a different world now. I now have two children, in KG and PK, and I see the same thing with 3-5 structured activities. Part of it is an arms race of getting kids into top colleges, which now starts earlier and earlier. People realize the right college is a way to potentially hockeystick your future.

We have swimming, soccer, and language #3 for the kids. We're hoping the whole college mess gets figured out by society so we can live a more normal life.