Lol, not really, it's not like something that has believers in it will automatically be a religion right? And bitcoin doesn't have that great establishment that will keep its followers lol, if we want to compare it to religion. Since many are willing to abandoned it as easy as it goes.
But the thing that satoshi is unknown, like god is kinda similar though lol. Many people value satoshi even knowing who he is, or even if he is really real or not. But no, i don't think bitcoin is like a religion.