Yup. The steps are definitely rooted in Christianity, but you can exercise them however you want. As you might imagine, most people suffering with addiction are not that religious (if at all) and the same thing goes in those groups.
Turns out in the last few centuries a lot of unanswerable questions have found answers rooted in scientific progress and the new answers conflict with the previous answers, which by their very function as placeholders could not have been correct.