I was listening to a (100x wiser than me person) saying on an interview that (I'm paraphrasing) "the disconnect between thinking and writing (brain+hand+fingers+pen+paper) is the thing that will lower intelligence and stupidify people". The guy was far gentler than how I wrote the previous sentence, but he went on to analyze how humanity's ability to 'grow' has exploded in comparison with the invention of writing (Harari's "Nexus" also speaks of this), and how "writing 10 words and getting 1000 back, and not even reading that" will make the (perhaps 'academic') part of people's brains 'poorer'/weaker.

Now we think the 'prompt' and the writing magically happens. No finger motion, not thinking each word and writing it down, no re-reading 3-4 times (as we check if our handwriting is readable), and so on.

When I heard that the image (Wall-e) of the fat people on board the spaceship, sitting, and consuming 24/7 (food, drinks, 'content' on their VR headsets). Full tech everywhere, everything they ever desired - they got, but fat, clumsy, unable to walk, in the mercy of even the tiniest of adverse circumstance.