TVs and vacuum cleaners are now a lot cheaper AND more reliable then they used to be.

Cars have become more reliable and relatively cheaper then they used to be, but they are a lot more expensive so have a long way to go until that point is reached.

TVs are definitely more reliable, but vacuum cleaners? I had a Dyson a few years ago and it didn't take long before plastic parts started to snap off. Meanwhile my mother in law's Electrolux or whatever is indestructible with occasional maintenance.