It's not coming from a religious position. Theistic religions tout gnostic theism, full stop. The reason agnostic vs gnostic atheism is a thing is purely because belief in god is such a big deal socially. It's a claim that can't help but be addressed because of how ingrained it is in everyday life (particularly in the US). If people were inclined to discriminate against you based on your belief or non-belief in vampires or Santa Claus, then your stance on them would be just as prominent. Your quote at the bottom is agnostic atheism, but it doesn't necessarily say anything about being "open to religion." If there were some sort of proof that a god or gods existed, it doesn't mean that any religion is correct about them. For example, I know for a fact that the god of the Bible does not exist because he's a clearly defined character and the nature of the world disproves his existence. However, I don't claim to know that no gods exist, period.