You’re being myopic. Yes, TVs being better and cheaper isn’t that useful. But ACs, dishwashers, washing machines, beds, cars… etc. are all useful counterpoints when discussing the economy and these are impactful. And beyond the normal big ticket items, smaller items (thank China and Walmart) are cheaper. And that adds up. Lamps being cheaper doesn’t seem like much but add that across all the furniture in the house.
1990s cars aren't any more prone to rust than cars now, the rust is just hidden under the plastic panel. That plastic panel isn't doing any of the work of the frame though. Shit and gilded shit are both piles of crap even if one looks better at first glance. Especially when you consider how much thinner modern car frames are which means there is less to lose before failure, assuming the electronics even last that long.