You claim using AI tools doesn't dumb you down, but it very well could and is. Take the calculator for example, I'm overly dependent on it. I'm slower to perform arithmetic than I would have been without it. But knowing how to use one allows me to do more complex math more quickly. So I'm "dumber" in one way and "smarter" in others. AI could be the same... except our education system doesn't seem ready for it. We still learn arithmetic, even if we later rely in tools to do it. Right now teachers don't know how to teach so that AI doesn't trivialize things.
You need to know how to do things so you know when the AI is lying to you.
I agree that you should learn the fundamentals before taking shortcuts. I just don't view it as the universities' job to repeatedly remind their students of this, that's elementary/high school style. In universitiy, just give them hard problems requiring fundamental knowledge and cross-checking capabilities but don't restrict their tools.
I TA'd for the fundamentals of computer science I in college. In addition to being a great class for freshman, teaching it every year really did help keep me sharp.
High schools are a long way off from that level of education. I took AP CS in highschool and it was a joke by comparison. Of course YMMV. The best highschool CS course might be better than the worst university level offerings. We would always have know it all students who learned Java in high school. They either appreciated the new perspective on the fundamentals and did well, or they blew off the class and failed when it got harder.
We could keep the same teaching offerings, my main gripe is with the assignments/examinations. It just feels wrong to complain about students using AI while at the same time continuing to hand out tasks that are trivial to solve using AI.
I also worked for the faculty for the better part of my university studies, and I know that ultimately changing the status quo is most likely impractical. There are not enough resources to continuously grade open-ended assignments for so many students and they probably need the pedagogical pressure to learn fundamentals. Still makes me a bit bitter from time to time.
You need to know how to do things so you know when the AI is lying to you.