Children probably use more critical thinking in the playground and interacting with other children than in class, because classwork is mostly slop anyway.
LLMs are not going to one shot answers in Minecraft through the chat UI. Possibly a more effective resource than checkbox activities at teaching "critical thinking" (abused term in education).
The reason I started those conversations was specifically around when children are learning critical thinking skills. When we broke down exactly what types of exercises teach those skills, it surprised me to find that it starts way earlier than it used to. It is now a late elementary school topic, when it used to be high school.
That doesn't mean that slop isn't creeping into the classroom - it is. But what to do about it is a completely different conversation when it is pushed down from on top vs. assuming teachers are choosing it.
I agree that districts do have a lot of pressure on teachers to keep pushing up test scores which leads them to being gamed either by teachers or children no matter the tools available: https://en.wikipedia.org/wiki/Goodhart%27s_law