The danger I see is this, which I think you're saying the same
as but in a different way: Whenever a group goes "back to
basics" (ie - to the 'fundamentals') and tries to _RECREATE_ a
culture from scratch based on books, rather than working-with
the existing culture and refining it gently, there's problems.
Big problems. I look at history. Eastern Christiandom and Islam
had their back and forths from around 800AD-1500AD. Back and
forth but inbetween skirmishes and political grabs, they got
along more or less, shared knowledge. They managed to co-exist
generally, for a long time. But then a Fundy came in and said,
"We're going back to basics and making this True Islam" and,
well, Fall of Constantinople. I know I'm oversimplifying history
here but generally, that's how I see it. It's one thing if
something becomes an organic part of your culture. Real people,
real families, real government - really trying to keep things
running well and people generally happy enough. But somebody
comes along and decides, "We need to start from scratch"....
it's problems. Always problems. It's not just limited to
religions either. I can give other examples from other movements
as well.