Ok, yes. If you're developing a single-page Web app--or even a handful of pages--then you are correct, 6 months is an eternity. For an entire project though, which I understood was the thrust of this article, it is an extremely short period of time.
If Yahoo's goal is to develop simplistic Web software then I retract my statement, but we're talking about something absolutely worlds away from the type of stuff that Google has been producing, or even Yahoo over the past several years.
I'm not sure, but I don't think the implication was that the project must be 100% perfect in 6 months, just shipped. Slap a BETA tag on it, and it's still shipped, just not polished.
If Yahoo's goal is to develop simplistic Web software then I retract my statement, but we're talking about something absolutely worlds away from the type of stuff that Google has been producing, or even Yahoo over the past several years.