FWIW I think this is technically survivorship bias, not confirmation bias (but maybe the latter is a form of the former?)
I do agree, there is probably a lot of shit from the 70s that stopped working early on. On the other hand, I do feel like planned obsolescence is a thing. Look at Instant Pot. They’re going bankrupt because everyone already owns an Instant Pot and they all still work.
https://www.theatlantic.com/technology/archive/2023/06/instant-pot-bankrupt-private-equity/674414/
The problem in my eyes the failure is in the private equity firm that bought them trying to draw blood from a stone, not the Instant Pot.