I'm not completely certain what you're asking, but yes, Schrödinger’s cat was an illustration as a thought experiment about quantum mechanics. Basically it points out that an atom can be in multiple phase states at the same time independently. The variable is the observer and time. His theory was proven correct in 1996, that an atom can indeed be in at least two states of being, or phases, at the same time. The author of the blog is stating if the bond markets crash, money would be as useful as trying to feed Schrödinger’s cat after it was dead, not that the market is in two different states of being at the same time.