That's the ultimate form of selection bias though. As long as it doesn't happen we can continue to discuss this and if it does happen it's moot and we likely won't be discussing it at al.
Your view is a bit US centric, there are lots of nuclear installations outside of the US. The US is probably the least of the problem in this particular respect.
I don't see how selection bias enters into it, when no matter what selection method we use, the rate of accidental detonations remains zero. I don't doubt that that will eventually change, but even a large industrial accident is hardly the end of the world.
As for US-centricity, well, that's where I live, and as cold as this no doubt will sound to a universalist, I really don't see another nation's accidental nuclear detonation as being my problem; contrary to popular belief, the mechanisms involved in commencing nuclear warfare are a little more nuanced than "oh, hey, a nuke went off somewhere on the planet? Empty the silos! Tell the subs to flush their tubes!"
Your view is a bit US centric, there are lots of nuclear installations outside of the US. The US is probably the least of the problem in this particular respect.