That's just silly and so US-centric it's laughable (as is the parent). It's not BlackBerry that is causing the delay, the US carrier device testing/acceptance is the stumbling block. If it was up to BlackBerry they would be available now.
As someone who used to work for BlackBerry, this was always the stated direction for BB10. Whether or not that's changed in the last few months, I can't say, but while I was there the intention was always to release in the US last to work the kinks out.
It's not about bugs. I believe it's more for testing the market, and helping learn about how people would react to the product.
Microsoft sometimes release products in New Zealand earlier than the rest of the world, because New Zealand is small, and unlike european countries that are closely connected to each other, it's relatively independent to the rest of the world, which makes it a good place to pilot test products. My friend there is pretty happy for always being able to try newest products.
It really can be a good thing. You get to hand on it first. And if BB find it going well in the rest of the world, they'll probably raise the price when releasing it in the US.
It could be even worse to release in the US with a critical bug than to release later.