1) Good design can - to a certain degree - allow most people to replace parts. E.g. headlight bulbs or modules, which are held in place by 0-3 screws and a simple electrical connection. Similar things with door seals or floor mats. Many parts can be made repairable by low-skill users if they are just accessible and not glued in. Unfortunately many designs work against that, perhaps on purpose. This is also a massive accessibility issue for disabled and elderly people. Think lower grip strength.

2) Anti-repair design stops people from developing skills in the first place, similar to how kids who grow up on fixed-software devices often cannot hack the devices to develop technical understanding.