Is this a meme?

I just read wiki article and its all assumptions and models based on those assumptions and soot and firestorms assumtions that really seem over extended to create fear.

Basicly all boils down to how many simultanius firestorms there will be and how much soot will get into the atmosphere and fuck up the ecosystem and create cooling effect over X years (assumption again).

It feels like this is just a huge fear meme.

Especially when you read about firestorms in hiroshima and nagasaki and todays modern cities.