Wait - are you saying Schrodinger had
faith that the cat was an atheist?
Btw - the whole argument of the OP and other posters seems to revolve around 2 distinct definitions of faith. Faith in observation and faith in the unobservable. The former is something all atheists, theists, cats and probably poison jars all share - its is not something you really have a choice in (well I suppose you could choose not to have faith that your eyes see a cliff in front of you and keep walking...) The latter is not something universal, it is a deliberate decision either made by you (or for you by your parents for example) to believe in something unobservable. There is no justification for the latter, not any need for it.
IMO an atheist rejects belief in the unobservable while a religious person does not. An atheist does
not IMO reject speculation about the possibility of the unobservable, but merely rejects absolute belief in it. Since we're talking about Schrodinger, its worth noting that quantum theory is full of unobservable theory - but it is all speculation or thought until it is observed, and incidentally based in considerably stronger thought than religion.