Paul Graham effectively invented startups as we know them. Back in about 2005 already, he just gave a piece of advice: everyone who tried to build using Microsoft technologies, failed. Maybe enough people listened?
He had even stronger opinions about Java despite Amazon and Google (not to mention many others) being built in it. I could never figure that out because he's quite insightful about a lot of other things.
HN used to as well, every 2 or 3 years since it was started you'd have half the comments in a language discussion swearing blind that everyone was just about to switch to Lisp, then it was Erlang, then Haskell, then Scala.