I mean I'll readily admit my take was slightly hyperbolic and both mechanical and electronic can fail as someone rightly pointed out - however..
A Wisner Technical 4x5.
Two metal frames holding a leather bellows and a pair of rails to get the two square frames closer to or farther from each other. That's basically it.
No shutter, no lens, no focusing helicoid, no film pressure plate, no film advance mechanism. No gears, no dials.
Come on now. It would be weird it it weren't still 'working' when you're gone.
It's an extremely simple thing, very far removed from the aging, failing and complex mechanical 35mm cameras people are mentioning as a 'better' alternative to the Pentax 17.
On the other hand, they can suffer in the hands of idiots.
I have an immediate pre-war Linhof Standard 9x12 which is in perfect working order except some eejit stripped the geared thread on the front riser.
It's not terminal, the camera is still useable, but it's really annoying and not repairable by simply buying another part - if I were equipped to do it, I could make one, after a great deal of faffing around.
On the other, other hand, since I fell into my very small collection of Linhofs entirely by chance and accident, I have a 4x5 Technika III on which everything works perfectly and after a lifetime of pro work and it being consigned to a cupboard for a couple of decades before I bought it, it needed nothing to get it back into use.
Using it is a joy, it's just so well made and feels precise. Proper craftsmanship at a high price. You get what you pay for.