Although it's not marked as the inspiration, this post comes straight after an article by many-decades cryonicist Charles Platt, which he wrote for Cryonics magazine but which was rejected by the Alcor board:

Cryoptimism Part 1 Part 2

Platt discusses what he sees as the dangerously excessive optimism of cryonics, particularly with regard to financial arrangements: that because money shouldn't be a problem, people behave as though it therefore isn't a problem. When it appears clear that it is. To quote:

In fact their determination to achieve and defend their goal results in optimism that I think is so intense, I'm going to call it cryoptimism, which I might define as rampant optimism flavored with a dose of hubris and a dash of megalomania, sustained by fear of oblivion.

The above post may make more sense considered as a response to Platt's article.