Loss of understanding of the lower strata of the technology we depend on is a popular new fear. I see evidence of this all around me these days. The more the devices around us "just work", the fewer people question them and learn how they work. As time goes on, fewer and fewer people will understand them and the quality will decline. Looking at recent history, instead of relearning the underlying technology, we'll just replace it with a completely different approach instantly making the old tech obsolete and unfashionable. Why? Capitalism. There's no profit to manufacturers in you repairing your devices. As employees/workers, we're so starved for time and taught that time and money are equivalent, so we choose to swap time for money and buy a new one.
Like the Catholic church in the middle ages, Capitalism is in many respects helpful to society but ultimately holds us back and if we don't abandon it, it will lead to the end of civilization if it hasn't already led to the end of the habitability of the planet.