jay leno explained it
Jay pointed out that a hundred years ago technology was expensive but skilled labor was cheap. Today it is the other way around. Tech is cheap and skilled labor expensive. While building most everything has been cheaply automated we (at least not yet!) have not automated replacement of individual skilled labor. Hence the "dispose- don't repair" culture.
In so far as distinguishing BSOs which do serve some purposes from bicycles I try to think and label them as such,
Bicycle shops with mechanic sell bicycles. Hellmart and the like mostly sell bikes. Junior (JV?) versions of the real thing.