You're moving the goalposts.

> Why would anyone try to sell me a device by talking about how easy it is to repair it? What I expect is that it would never need a repair and if it needs a repair the vendor will handle it.

Because people value reparability, which someone posted evidence for. Buying a computing device that you can use and depend on for decades is a laudable goal, and reparability is table stakes for that goal because stuff breaks.