James May (unusually) made a very good point that the "good old days" is an illusion created by survivorship bias, nostalgia, and failure to understand economics. The survivorship bias especially should be obvious:
Lots of cheap crap was made throughout the years, but it didn't survive. We only have examples of the stuff that managed to survive, or was notable in some way. The $50 Smartphone equivalent of the 50's was no more notable than today's version, and no more long-lasting.