I lightly skimmed TFA, and it appears they are concerned with how well we explain/use what we have found as an answer on the internet.
I think this is an oversimplification. I use to read books on various computer languages and could program in them sufficiently before the internet (yes I’m that old). Now I don’t learn languages as deeply for various infrequently used constructs, but look them up as needed.
Now here is the thing -- once I have used a quickly found piece of knowledge on the internet, I then nearly as quickly discard it. Does it matter as long as I applied the knowledge as needed? I might research a topic, come to some insight, then discard the steps of coming to the insight, because I realize I could recreate my steps again more efficiently should the need arise than commit volumes of information to memory. What I now remember is not the facts, but the steps needed to find the facts.
It may be that in areas where I lack expertise I assign a probability that should the need arise I could get some answer. Is that the same as overestimating my knowledge? This probability assignment includes shades of gray and that realization that a search might return wildly different answers from various sources, for instance if I’m looking up something on foreign policy decisions. This last example actually forces me to keep my knowledge more fluid. I constantly reevaluate my positions as new information comes to light, instead of defending to the death my old hard won knowledge and opinions.
Yes there may be some detrimental effects to relying on the internet augment our intelligence, say for those that have to write technical manuals for instance. But there are also benefits to be had. Sort of like JIT (Just in Time) manufacturing, we now have JIT knowledge.