It's just that when your washing machine's motor fails after a year, or you need to replace your convection oven's fan seven times before it stops making a buzzing sound, you realize that it's about as much about cost-cutting as it is about efficiency and actual, material gains.
I don't see it that way - I think that Dr. George is missing out on the real difference in generations. It's not that there's a new generation that is mechanically unable or prevented by evil industrial designers from repairing old products. It's that there has been a fundamental shift in the equation of time and money for many younger (educated, employed) people in the first world.
One of the things I never considered when I was in high school/college but appreciated dearly as I got older was that absolutely every decision in one's leisure time (at any age) was a function of money vs. time. At all ages of life, you have by definition more than one of the other. When I was in high school and working at Burger King, I was more than happy to spend a whole Saturday afternoon disassembling and reassembling my third-hand SLR camera to get the advance lever working again rather than taking it to a camera shop. In my post-collegiate bachelor days I unquestioningly built new PCs from scratch rather than spending the $100 (or whatever it was) markup to buy an equivalent one from a white-box computer shop.
Today? I'm 40-ish with a well-paying but time consuming job, a wife (who also works at a well-paid full time job) and two young children to take care of. I own a lawnmower but would rather pay a neighbor kid to do it so I can use that equivalent precious time with my kids, or even (a rare treat) taking a nap. I could save a reasonable amount by changing my own oil and filters (screw you BMW and your requirement for ludicrously expensive synthetic oils) but I take it to an auto shop because I don't enjoy the process and I'd rather have that time back to do something else. Time is important to me these days, not so much money, and that informs all my decisions.
Long story short - leaving money aside, many people from older generations don't "get" the modern emphasis on - MBA joke coming here - "the money value of time." Someone who says "why on Earth do you need to read your e-mail after hours?" is probably going to have no understanding of why you wouldn't want to buy something new instead of taking the time to repair it. If you don't have the money to pay someone else, or even better actually like repairing things then regardless of generation you will take the time to do so, I'm sure. But if - for generational, money or whatever reason - you are accustomed to time being more important to you than money, why not pay a professional to repair something or buy a new one?