I remember all the things you mendion in the first part of your post, been there done that and used a Gestetner duplicator for the club newsletter back in the 70s (ink everywhere). My trainspotting involved steam engines…
Yes, I used MSDOS too as a self taught application writer and also had a couple of Sinclair Spectrum games published by the then owners of Model Boats magazine. You can still get them online with an emulator programme. Horribly crude by today's standards but still playable. I installed the first PC local area network at the County Council department I worked in including laying the cables and setting up all the workstations and servers. (just green screens then). All lots of fun.
I make very little use of a smartphone compared with what it can do and what others use it for such as social meeja
I simply use it as a tool for the bits I find useful for the things I do.
No, Kindle is not the same as a proper book and I love my hundreds of books which will probably bring the ceilings down at some point. But I do a lot of reading, fiction and non fiction and when going on holiday involving a flight the weight of real books takes up far too much of my baggage allowance so in that case the Kindle is very useful. It is also possible to download well written very cheap light fiction to the Kindle and I'm happy to pay £1.99 a book instead of £8.99 f0r a paperback,, bearing in mind that most of the stuff I read isn't published in hard copy format anyway.
But yes, many people only embrace modern technology to a limited extent and in in the case of the readership of Model Boats which is probably an average age of around 69, most of them do not go on Forums but simply prefer the hard copy magazine, more power to their elbow.
Colin