Just because a calculator will only ever be used by a subset of the population to type 80085 and giggle, doesn't mean it can't also be used for complex calculations.
AI is a tool that can accelerate learning, or severely inhibit it. I do think the tooling is going to continue to make it easier and easier to get good output without knowing what you're doing, though.
I'll give an example. I tell people I tip by: round the decimal, divide by 10, multiply by 2. Nearly every time I say that people tell me it is too difficult. This includes people with PhD STEM educations...
Hearing these stories (and I hear them more than I would like) is mind boggling to me. As someone who’s quite bad at math, doing what you describe is insanely basic stuff, anyone in a developed country with access to school should be able to do that. It will be hard to convince me those people are using a LLM to learn.