I thought of SAD, too, as I experience it. But I'd be concerned about a few things beyond that. First this is kindergarten, and it seems cruel to punish a kid for squirmy and distracted behavior, and even crueler to remove the sort of outlets that may help with those behaviors.
I'd also be very curious about how the teacher presents things. If the teacher is using labels ("you're bad") in response to behaviors, it can make for some difficult internalizations. Also, if the teacher has a win/lose relationship perspective such that she is trying to bend your daughter to her wil, that could lead to your DD's perspective as she may be perceiving the literal truth.
It could ultimately be a cascade failure that she is bored and under-challenged which leads to distraction. Her "rage against the machine" intentional acting out by refusing to do work beneath her seems pretty telling.
