Earlier quoted context omitted.
The presumption that we're losing "intelligence" is unproven and widely debated. I'd prefer "capability" over raw intellect any day, and my capability is definitely greater than it was a year ago.
There's nothing to debate about "use it or lose it"; the reduction in numeracy after the adoption of pocket calculators is well established. And "capability" is the measure of the mere assembly line worker. "Raw intellect" is the measure of the inventors and creators.
Yet, I'd say my career so far has been very successful and personally enriching for me.
So what am I losing? I still use my intellect day in and day out, so it can't be that I'm not using my intellect at all.
I don't find this argument persuasive.