Thanks for sharing Carmen.
I thought it a great example of how people overlook the simple things that still work well today. My newspaper delivered my daily information, served to swat flies, and lined the bottom of my parakeet cage, or was wrapped around a fish I caught and carried home. Try that with an iPad! And talk about reuse and recycle!
I don't know if changes can be categorized as forced obsolescence - though some of that exists. It is more along the line of what you say about things people don't know. Many today fail to understand the evolution of technology. Jason Dorsey (researcher of today's generation gap) pointed out in one of his videos (TED Talks and YouTube), millennials are not technology savvy. They are technology dependent.
People don't understand, using your blue pencil example, how the technology works. (You have any rubylith or amberlith in your desk? A 'snotty Oscar'? )
(I don't know how common that last reference might be. It is a 1/2 inch thick, 2 inch square of a material that cleaned up excess rubber cement when you were done doing REAL cut and paste work. When you roll up rubber cement it looks sort of like ... well, I think you can take it from there.)
They don't realize that simple pencil and real masks cut using rubylith evolved into chromakey technology used today in Photoshop, video, movies and even PowerPoint when you set a transparent color. And it seems taken for granted that chromakey was always around. (To be fair, the concept behind chromakey is old, but it was also very manual processing.)
Your story reminded me of something that happened quite a few years ago. Also shows how people get wrapped around using technology for specific tasks when other software can do the job.
A co-worker was cussing at Photoshop. He also had PowerPoint open. I asked him what the problem was. He explained what he wanted done on an image he wanted to use in PPT. He accepted my offer to assist.
I closed PS, inserted his image into a PPT slide; cropped, resized, recolored and added a gradient box then put his text box over top. Took about a minute. He was shocked how easy it was and that he really didn't need to use PS.
I walked off using an old movie reference (in a bad Spanish accent) 'We don't need no stinkin' phot-o-shop!' (He knows I am not a big fan of PS. I prefer GIMP and PaintShop Pro.)
He responded "I know that movie: "Blazing Saddles!" I told him "Nope...actually a 1948 movie... Google it."
I don't know if he ever found it out.