Are all atheists this ill-informed about religion?

[The Grand Nudger]

That there are apparent wide and important differences is not being denied. What is being denied is that these are differences of core doctrine. Rather they are differences in peripheral doctrine or practice. 

Deny all you like...and when you're done, what will have changed?  Will you have resolved sola scriptura?  Will you have a definitive christology?  Will you be able to comment upon the availability of redemption?  No, no, and no.  

That some like to worship God with ethnic instruments and others do so with electric guitars might appear to be a wide and important difference, but it's merely one of peripheral doctrine or practice. It's not a difference of core doctrine. Even the difference between "God wants us to be poor"-ism and prosperity preaching might appear to be a big difference, but it's not a difference in core doctrine. 

Instrument choice doesn't measure a blip on my radar.  I don't care, and you don't care...so why are we discussing it?  

And yes, this applies even to the wars of religion in Europe. For example the Catholic-Protestant conflict in Northern Ireland was not fought over religious doctrine, but over issues like home rule, where the division along sectarian lines was predicated on the fact that most Protestants feared Catholic-majority rule, and thus resisted Irish home rule. 

You betray your opening statement in the conclusion, but why should it matter - have either of us been discussing Ireland?  No. 

So what's the upshot? Two things: (a) Differences that appear to be important in terms of cultural behavior or preferences are not significant doctrinally, and (b) a lot of the conflict being pinned to Christianity in particular does not involve Christianity or Christian beliefs but rather cultural and historical associations, of which members who call themselves Catholic or Protestant have no idea what their religion teaches. Not to mention © your whole story about holding onto social purchase is total atheistic fiction for which no independent evidence exists.

Since it's a political history of campaign ideology in public elections, the information is freely available to anyone who wishes to view it.   Is there some requirement for you to waive away a political reality?  Should these groups fail to serve their collective interests, is there some shame in accomplishing that goal?   

 Is adherence to scripture unimportant?  Is christology unimportant?  Is redemption unimportant?