Graphing calculators did, which is why in a lot of math classes they got banned. If your calculator can solve for x, you won’t spend time learning how to. The best math classes usually do without calculators focusing on concepts and skip numbers you’d need a calculator for.
This, I was allowed to use the grahpic mode to do integrals and differentials. It made high school easy, but in uni I had zero math skills it turned out. Had to switch studies..
There’s a narrow band of math that’s amenable to pocket calculators. When used in that band, they can repeatably return the correct answer.
The cognitive decline described here sounds far broader than just getting rusty at arithmetic.
When I enter 5 x 5 on a pocket calculator, I always get 25