I only read about it randomly. Not aware of it being discussed by anyone with some more serious reach

Not vouching for all of these, but here you go: https://youtube.com/playlist?list=PLI1pxeQLDFoXeawCT87K1caUsz1nIDt8H&si=J8zPIctUYBtdY8zE

Death Object - Akio Nakatani is a good one

I’ve heard Saifedean allude to this. Makes sense to me. All our knowledge of nuclear programs come from government agencies. Much of the old test footage looks fake. The idea is that we have big bombs, but not so big to destroy a city in one drop.