Agree on all points.
Even something as "basic" as the printing press making books widely available did not deliberately or necessarily impair human memory. It was always the choice on the part of people to neglect committing to memory that which could simply be remembered by the book itself. hell, you can even do that with shopping lists on a slip of paper.
Similarly, from "guns-don't-kill-people, people kill people" to "calculators don't make you stupid, relying on a calculator makes you stupid", it is never the technology in and of itself which has the corrupting effect, but rather the tendency to rely on it or exploit it.
Personally, I find much of the presumably convenient technologies inconvenient. As I keep repeating, for me useful technology is something that makes a guy my age (58) say "Finally!", and not something that makes someone my kids' ages say "Coooool!!".
I wanted to be able to play my choice of music in the car. With tapes it was a breeze. You could stick anythng you wanted on a cassette and be done with it. Last night, attempting to play some music I obtained in WMA format from a USB stick in the car, I had to:
a) download a WMA to MP3 convertor
b) convert the files
c) import them into another piece of software
d) segment the entire file (a concert) into separate chunks
e) reprocess each chunk so that the volume level of the music could favourably compete with the hiss from the gadget I needed to use to "broadcast" the USB contents to the CD/radio unit in the car
f) export each chunk as a named MP3 file
g) save the resulting converted files to my USB stick
Yeah, there's a real step up from cassettes.