On the other hand, they're largely just adapting to the world they live in. A *lot* of stuff now is not designed to be repairable in the field, so learning how to fix stuff in an age when taking something apart is often a destructive operation and parts are impossible to find is maybe a bit of a waste.
That said, my 8-year-old can already model things in CAD and 3D print them, and "right to repair" has become a thing. So maybe there's hope after all, even if we do have to drag manufacturers kicking and screaming into a new age of repairability.
I would expect that even without parts support, someone with enough skill, drive and equipment will be able to fix things in many cases before too much longer. You can get a good 3D printer for about $200 these days, and while things like good laser cutters and CNC machines are still quite expensive, they're starting to get down to the consumer-maker level as well. Glowforge has a laser cutter for $699 now (that's... mighty interesting) and it looks like there are even some sub-$1000 CNCs now too. So, when you can't find parts, maybe you can make them. And it looks like I need to get to work building my basement workshop so I have room for more tools soon.
Also, there's now services like SendCutSend, OSH Park, and PCBWay that allow you do get one-off parts and circuits fabricated for amazingly reasonable prices. So, even more hope on the horizon.