Earlier quoted context omitted.
On the other had, we are a lot better at making things out of cheap materials. Clothes from Target are relatively durable considering the price, especially if you do basic repairs like they would have back then. Even the food is probably better now. It's not perfect, but modern products are pretty amazing. A shirt can sell for $2 and last 20 years in some cases. Of course sweatshops and pollution are still awful.
Sure, clothes from Target might be relatively durable considering the price. But you need more clothing now. In a lot of places, it is socially unacceptable to wear the same thing for days in a row, even if you change your undergarments. You also don't have a realistic choice to make your own clothing. Cloth, thread, buttons and zippers aren't cheap and it became more out of reach in the late 80s and through the 90's…
Apparently the average is $300 a year for an average man, but it's possible to spend much less.