I think it depends on how you frame ‘spirituality’. Love for example can never be meaningfully measured empirically, it’s a spiritual truth. You just know it. It cannot be reliably be proven or disproven, especially across different people.

I don’t think the line between ‘I truly believe in love’ and ‘I truly believe in god’ is as crisp as people would like to believe. That’s not at all to say they’re the same thing, but they’re more similar than a lot of people want to accept.