This article presupposes that Proxima Centauri is not, in fact, made of chorizo. Whereas we have long known that the moon is made of cheese. I think Klein is floating a test balloon to gauge the public's willingness to consume the 'celestial charcuterie' theory of the heavens.
A branch of that theory posits that black holes are higher dimensional beings that happen to like the taste of this universe. Also that entropy proves expiration dates are misleading; shelf life is not a cliff but a monotonically decreasing value.
I believe string theory deals with what happens at either end