I spent seven years working at Bing, and I can tell you that this guy is massively, hugely underestimating the difficulty of this problem. His repeated "it's easy! You just have to..." suggestions are absurd. This is typical HN content where someone with no domain expertise swaggers in and assumes everyone in the space must be idiots, and that only he can save the day.
Trust me, there is not a ton of potential "just sitting on the floor" in web search.
Trust me, there is not a ton of potential "just sitting on the floor" in web search.