I shudder to think what happens in 20 more years, when the last potato peelers are gone :-/ The movie "Idiocracy" inevitably comes to mind [1] :(
However I do think it's something more than just the burden or unburden of our new technology. Logical thinking should be an universal trait, no matter what the environment is like.
However one thing which is eating into that equation, is logical thinking is almost never promoted in modern education. Even in a declining IQ environment, promoting and teaching logical thinking would reverse a lot of the seeming "stupidity" in our society.
But I still do think there is something more going on. It's not just (lack of) education.