I don't think Scientology affects Beck at all, positively or negatively. He rarely talks about it, other than saying his father was a Scientologist, and that it's kind of like Buddhism. So he's definitwely not hardcore devoted. In fact, he didn't even confim he was a Scientologist until 2005. And when asked about what Scientology is, he replied:
"What it actually is is just sort of, uh, you know, I think it's about philosophy and sort of, uh, all these kinds of, you know, ideals that are common to a lot of religions....There's nothing fantastical... just a real deep grassroots concerted effort for humanitarian causes.I don't know if you know the stuff they have. It's unbelievable the stuff they are doing. Education... they have free centres all over the place for poor kids. They have the number one drug rehabilitation programme in the entire world (called Narconon). It has a 90-something percent success rate... When you look at the actual facts and not what's conjured in people's minds that's all bullshit to me because I've actually seen stuff first hand"
Plus, his songs very rarely have any sort of religious undertone.
If Beck mentioned Scientology in every interview, I'm sure it would change my views on his music. But he doesn't.