It's like saying in the 1970s that people would become dumber because of calculators. It's a tool. You can use it lazily and not learn much, or you use it actively as something that propels you further along in your learning.
The human has to have enough understanding of the problem to know which math to apply and calculate in the first place. That requires understanding and discernment. This works the brain. This mental work strengthens our problem solving ability.
Whereas with AI, you just tell it the problem and it gives an easy answer. Thus involving no further work from the human brain which causes it to atrophy just like any other underused muscle.
You give a calculator a problem and it gives an easy answer thus involving no further work from the human brain which causes it to atrophy just like any other underused muscle.
Just like a calculator can easily solve some problems so can AI. Sure the set of problems it can solve is bigger than a calculator. AI just enables you to work on bigger problems because you’re not spending so much time “calculating by hand”.
If you delegate all your thinking to AI or you use AI when the point of the activity is to do the activity (ie homework at school) then I think you’ll see problems. Just like using a calculator when you’re supposed to be learning how to add will stunt your growth.
The way you describe AI - tell it the problem and get an easy answer sounds identical to anecdotal complaints I've heard like Google search providing an answer to everything means no one has to learn anything, or everyone copying code from stack overflow articles. At the end of the day it's still another tool with pros and cons, tradeoffs, etc., and will be used and misused and abused by different people in different ways.