I think you could extend this observation even further. Technology start-up culture has a habit of sh*ting on well established knowledge as being useless because founders of start-ups often lack these knowledge yet still manage to succeed. An example of this is the general disdain for business know-how in the form of say an MBA.
They fail to realize that the reason they're succeeding is not because traditional business know-how is useless but rather because innovation grants you advantages that often allows you to succeed without business know-how. However this advantage disappears once everyone catches up to the innovation then business acumen reasserts itself. We are currently in a golden age of innovation, but that won't last forever.
The metaphor I like to use is: It is like someone using a machine-gun and hitting every target then concludes that marksman skills are useless while ignoring the fact that they are only hitting their target because they are using a machine-gun.