[developer1]

A young audio engineer might know every possible fact about how Bluray, DVD, and CD formats work. Probably even cassette tapes and Long Play records (aka LPs). But I'm sure it's completely respectable for you to roll your eyes when an audio engineer gives you a blank stare when you bring up wow and flutter caused by a flattened pinch roller in an 8-track tape.

What would be the software equivalent? Insulting someone who starting developing on PHP 5 not knowing about the short_tags() global function which only existed in PHP 3? Someone proficient in Visual Basic .NET but doesn't know anything about VB 1-6? There is no reason to know how to develop in an ancient version of a language if every job you have had thus far has used exclusively modern versions.

Merely having been alive during the decade in which an obsolete technology was first introduced or was still popular means nothing. It may even have some relevance today when discussing the then-and-now similarities or differences, but frankly someone born decades after its obsolescence just will not care. There is already more knowledge than is possible to absorb about current technology. There is simply not enough time in a single lifetime to care about what came 20-40 years before. Perhaps if we ever push life expectancy to 1000 years, we'll spend the first 100 years of our lives reviewing every relevant detail of the past.