I guess I am missing the reason for alarm. Yeah, I see a couple of pics
that make me a little nervous but snapshots don't always catch the action.
If the router example is the young lady in Orange, I can't imagine
controlling that block she is routing with a push stick - she has her hands
in a defensive position and unengaged fingers raised. The young fellow
using the shaper does bother me but I don't know if the right hand crossed
over the knife path or he just put it there.

It is easy to pick a shop class apart from a few pics. If you look at all
of them there appear to be some pretty well-trained hands and eyes among
that group.