How many hundreds of thousands of years was it going to be a wasteland for? Poisonous everything? Someone forgot to tell the animals!
And apart from a few graphite blocks, how much carbon was released into the air? About none. Some steam, bit of xenon (an inert gas) and was there some iodine? Normally they add it to salt.
What about everyone going on about nuclear war? Again they said everything would be like the stone age and the ice age and mutants everywhere but think about it. How many nukes would be needed in a hot war? Five hundred? I can't name that many cities of strategic importance. A thousand? More than twice that number were let off as "tests" and I haven't grown an extra head. For convenience I've started this time-lapse at the fast replay point near the end. The distribution of atomic blasts is clear. Those opposing the nuclear forces God created need to give data supporting their position. Being triggered is not data.