I think people have a massively idolized view of home appliances from the 1950s and 60s. Most men knew how to fix their appliances, because those appliances regularly broke. My grandfather lived til his death with the washing machine he bought in 1968, and it required him to fix
something about once a year.
To say they were somewhat less efficient than modern ones is an understatement - I replaced a late 1960s, 3.5ft fridge in this flat when I moved it. The old one would barely make ice. My new fridge is not only 7ft tall with a freezer that hits -32C, it does so with the same power draw as the old one. It's not perfect, I had to get it fixed once - the freezer coolant started leaking. But that was a $60 fix, and otherwise, it's been going strong for almost 15 years. It also cost $500 - which is similar to what it would have cost in 1970, with the caveat that these numbers are not adjusted for inflation. That $500 in 1970 is equivalent to $2300 in 2002, when I bought it.
I have a washing machine of similar vintage, and I'd like to get a new one... but I'm waiting for it to break. No luck. It's been going strong with a single repair, and it only cost $220, or a little more than the Kenmore washer I found in the 1970 Sears catalog for $190.
The truth is even if we accept that these goods are inferior, it's because we as consumers made them that way. We'd rather buy 3 appliances over 30 years than pay 3x as much up front, then hold on to it and service it for that time.