I can completely see that from your point of view too. But look at how he started out, too, a lot of his songs from earlier days were about his religion - Galaxies, Meteor Shower, The Christmas Song, The Technicolor Phase, I think for a while he was told to possibly repress it because he may lose people (maybe for TMS?) but we can see it as him branching out once again and not being afraid to put himself out there. He’s been interviewed by countless Christian magazines, and even ATBAB was named after a hymn, so, I think people know what they’re getting into when it comes down to it and his music. I don’t see it as a pressure sort of thing, like if I attended church with a friend or something I would only see it as an admiration of another person’s faith or thoughts and beliefs. That’s how I listen to those songs, with more admiration instead of a feeling like pressure or being forced to convert or anything like that. It means a lot to him. I don’t think he means to be pushy or forward, I think he’s just proud of who he is and what he believes in. Just like you, I hope. :)
As an atheist, I can honestly say that I don’t find Adam at all pushy. His songs aren’t ever about trying to convert others, judging others, or even caring at all about what others believe. At most, I’d say you’d find this in some of his older blog posts, and possibly implied from some of the Bible passages he posts (although I don’t find that from either of those, but some might), but he basically talks about his own experiences.
Tbh, I don’t see it as any different from talking about a relationship or anything; it’s just something that’s a part of his life that he feels he needs a creative outlet for. I also don’t think it’s particularly important if he’s “losing fans” because of his faith, because I really think art is about making something for yourself.
Adam doesn’t talk about others’ relationship with any deity, he talks about his own, and honestly, good on him for it.