Indicative of what exactly? A certain type of nerd (emphasis that I mean a sub group) that is likely to never accumulate wealth or create anything particularly successful on their own because they're too anal-retentive to understand that success in building a Web app or business is not defined by whether you use PHP or Ruby or Python or even ColdFusion.
Unless you think you're the next Facebook or Tumblr, then extreme optimization is necessary. Otherwise, the rest of the discussion is bullshit stacked on top of bullshit.
If the common wisdom were followed, Plenty of Fish should have never existed, given their infrastructure and development approach. And Stack Exchange should have never existed with their 'lame' Win stack (popular opinion of the Windows development environment among a certain class of developers =) ).
There are a lot of ways to 'skin a cat'. The only thing that matters is whether you can get to the finish line, build something people want to use, and perhaps monetize it so you can keep putting resources into making it better. Who gives a shit what you use to get there, just so long as you get there.