This perspective is explored in Thomas Landauer's excellent 1995 book The Trouble with Computers. Others suggest its' basically a labor problem. You can't just dump smart machines on workers who don't know how to use them. Then there's the less charitable, goof-off theory. Spell checkers have much the same effect.
Machines induce laziness.
First the machines took over all the heavy lifting and our bodies got flabby. A disciplined minority exercised and stayed trim, but most of us settled on to the couch and reached for the remote. Computers may have a similar effect on minds. We work our gray cells less hard than we used to. There's a key difference, however.