Interesting question. I think it's important to distinguish between two things that people refer to as "spiritual". There is the (cult-like?) group spirituality (like religion) and there is the more personal ethics-type spirituality (like ancient philosophy). While I consider the second one as an important part of life (and Bitcoin can very well be part of that), I'm much more suspicious of the the first type.

I once heard that every movement that grows too large invariably attracts new people in who bring their own ideology and belief system with them and will try to put those things into the center, often diverging from the original visions of a movement. I think it's similar in Bitcoin. Nevertheless, Bitcoin, thankfully, doesn't care.