Plenty of manufacturers give a 7 year warranty for new cars. In addition, there's no sign that new cars depreciate faster than older cars (when comparing current depreciation for historic depreciation). In markets where cars are driven for many, many years and kilometers (e.g. Finland), there's no evidence that new cars shouldn't be expected to last more than 5 years.
The trend of making computers and phones nigh-unrepairable glass sandwiches is awful though, as soon as the battery or other major component is toast the device is practically worthless. It's infuriating how far backwards we've gone in that aspect.
Generally if you are willing to pay 80’s prices inflation adjusted you can still get high quality appliances you just end up with the washing machine Apartment complexes use etc.