I’m soooooo glad that my kiddo is not doing Common Core!
Call me a big meanie, but I think this is good for kids.
It doesn’t matter if it’s math, spelling, building blocks, or a sport.. Criticism in a constructive way isn’t bad, imo.  Nor is the discipline and the awareness that comes with it.
I remember the first time my son was goofing off at football practice, age 5, summer before kindergarten- full tackle.  Well, my kiddo and the other boy who was messing around, they both had to run a lap around the field.. in their uniforms and helmets.  They were told why, and that failure to pay attention can result in an injury.  Guess who paid attention consistently after that?
I do know that there are parents who have a different thought process regarding that, but I’m A-OK with it.