Societal fragility created by over-dependence on technology without preserving the foundational knowledge.

Related is something one might call overengineering or structural fragility, where similar fragility in technical systems arise due to them being built on excessive layers of abstraction and overly complex subsystems, with insufficient market or societal pressure to drive simplification or restructuring.

Related:

• Permacomputing
• Talk: The Thirty Million Line Problem - Casey Muratori
• In a similar manner, craftsmanship in many areas are lost due to recent advances in technology: Talk: Does Technology Destroy Art? - Jeff Fowler
• Book series: Foundation - Isaac Asimov