The gaki trio acknowledge this going as far as saying that they themselves are the defined absolute being because it's up to their own judgment on what an absolute being is. They're more human than they're willing to acknowledge but insist on believing they're above life.
everyone wants to r/atheism kei here, but she isn't dunking on religion. The entire point of the event is the definition of purpose and life and she's saying as per Deca's scripture, an absolute being can only exist because man has defined it as such.