The "beer can quality" term came from Moses Ludel. He wrote a book. It was focused on off road, and jeep thought they had the best rigs. The materials in the Landcruiser's was expected to be "tin". It was not.
Now , the other vehicles being imported certainly needed to fit Americans size people, freeway speeds etc. were not designed right , but, quality was not beer can. A lot of customers in America saw Japan as a 3rd world, behind the times, bombed out , when actually they were growing to become the best in manufacturing.
Since this a forum for Toyotas I will not mention the fact that electronics manufacturing such as GE, Zenith, and all the others were replaced by Sony and all the others. China should be commended for carrying on the same path for manufacturing and growing in quality as well. I certainly believe China is a manufacturing giant compared to USA/Europe and it can be proved. Look closely to products you buy and keep track of what is made in China vs made in USA.
An old memory was in 1975, yes , I am old, rust belt purchase of friends, one bought a Toyota Celica, other Chevy Vega. Vega rusted out in a year vs Japan quality , Today the Toyota is restored and cool.