Sorry, but what's that got to do with iOS7? Parent wasn't saying that the dev centre being down isn't a bad thing, just that iOS7 incompatibility errors aren't high on the priority list yet.
The first to market with support for iOS 7 are obviously going to have a huge advantage over other App developers. the SDK being down for every developer without access to alternative platforms for their dev stack are now put back on schedule plus the length of the outage. Again, first to market in such a large market is a huge advantage, providing social and technical momentum, making or breaking careers and enterprises for those who depend on Apple's generous
returns. Entire companies can be birthed or go splat due to variables like this. It's a risk they app devs are aware of, but that doesn't mean it isn't a Big Deal.