I've found it is easier than that. If a system is setup so that professing a belief will get someone a benefit, then you will find a ton of people claiming sai

I've found it is easier than that. If a system is setup so that professing a belief will get someone a benefit, then you will find a ton of people claiming said belief. Now, there are also people that will act counter to their beliefs for other reasons. Sometimes for reasons you don't know. But that is, largely, a different thing.