There have been many other thinking technologies and they ALL have been attacked in exactly the same way.
* Socrates attacked the invention of writing, arguing it would make people intellectually lazy.
* Abbot Johannes Trithemius argues in "In Praise of Scribes" in the 15th century that the Gutenberg machine would make people intellectually lazy.
* Lots of people in the 1960s attacked punch card computers, and automation in general (!), on the basis that it would make people intellectually lazy.
* Nicholas Carr attacks Google in a famous article "Is Google Making Us Stupid?", on the basis that it would make people intellectually lazy.
And so on and so on and so on.
"That which has been is what will be, And there is nothing new under the sun."
It is because of this history that any argument such as the author makes, arguing that AI would make people intellectually lazy, must start already from the lamentation of the downfall of human intelligence from the days of Socrates, or must explain why this is different.
It is obviously not different.
There are three mental skills being offloaded onto AI:
1. Domain-specific skills
2. General intelligence (g)
3. Recall
Of these three, the danger with 1 is offloading them too early, before the AI is "good enough" to be better than human experts. This is a genuine concern and we should do things carefully. However, if the AI is good enough, there is no danger here.
Recall is the mental skill that all of these innovations have "hurt", but it can simply be trained explicitly and synthetically. We will certainly have to structure our societies more and more in the future to synthetically exercising recall (like we're now synthetically exercising our muscles), but if we do this, offloading recall at work is not a big issue.
As for general intelligence, this is the most harmless to offload, because, as far as I know from the literature, it cannot really be trained, and it does not really degrade either.