What the article describes is correct, but I don't think the words "average" or "homogeneity" or "conformity" are the right terms, as they seem to carry negative connotations here. Rather, the right word is "convergence". The point is, people like certain things aesthetically. It used to be that artists and designers were still trying to figure out what looks good, and trying all the things. But now we've tried so ma…
Art nouveau buildings from the early 20th century are almost universally considered nicer than today's buildings, and yet they're no longer made. Not because we think modern buildings are nicer, but purely for a matter of cost. I suspect the same is the case (even if to a lesser extent) in electric toothbrushes and other items of our daily life.
Anecdotally, my home town replaced a three way intersection with a nice roundabout and then put up a little art piece in the center of it. People complained to the heavens about a minor expenditure on an art installation when the money could have gone to, who knows, resurfacing a half block of sidewalk? Not everything needs to be so drab and utilitarian, yet despite the supposed massive output of the economy we've built, we must scrimp and pay bottom dollar for every last thing.