The most refreshing part of this story is that it's not about the Apple / Google / etc App stores. Shows that exceptional indie products can get huge traction on a traditional platform, sort of like Braid on XBOX / PC / etc. That said, also excites me for the future when MSFT's & Apple's standard OS come with a servicable app store baked in.
On a similar note, Minecraft is written in... get this ... Java Which seems to be the dorkiest and most uncool language on the planet if you were to ask HN.
The real problem isn't that Java is spent, it's that (most) Java programmers are dorky. I avoid the language mainly to avoid associating with the community.