I understand what you're getting at. I don't see it that way however. If you have a solid, credible faith, minor things like that won't bug you. There are religious groups that think studying any MA opens you up to demonic possession, that if you don't spend all your time meditating on how much you love your god of choice, that means you're lost to evil.Thankfully, I've never encountered any in a martial arts setting, though I know that they're out there.
Flakes can have deep, credible faith and still be flakes... unfortunately.
Daniel
People may believe this, they may have centered the whole of their lives about this kind of belief. IMO it's a belief rooted in fear and designed to control the practitioners rather than provide any form of enlightenment. As such, it's an extremely brittle kind of faith.