Well, nuclear infinity hasn’t really gripped academia. Actually, it hasn’t really gripped anyone including government, think tanks, non-governmental organizations, or even the author of Nuclear Zero? Why Not Nuclear Infinity?, Matthew Kroenig. So what is nuclear infinity, besides an impractical security solution? It’s a prop.
But it’s a prop with a purpose. Nuclear infinity exists for one reason and one reason alone: to demonstrate the inherent unseriousness of the Global Zeros.
Read an article with a similar take (while not arguing in the absurd, and I don’t mean that in a derogatory way) that appeared in the Air Force’s The Wright Stuff at this link.