Peter,
So, just to simplify the question, can we draw parallels between the rewriting of religion through the ages and the interpretation of classic architectural ideals adopted by the likes of Colt, MacKenzie etc? In short, yes.
If there's a lesson to be learnt, I'd argue it is that we should avoid at all costs treating the principles of the Golden Age as is they were religious commandments because, if we do, and often in contradiction to the written word, inevitably there will be those that claim to be the sole arbiters of "what God would have wanted" (and in this context read Colt etc for God).
To be truly creative, we have to be free from the constraints of any form of unmoveable doctrine, but then here speaks an atheist. That is not for one second to suggest that I subscribe to any notion of rejecting past glories. The successes of the great architects from history are still present for us to see. However, to suggest that anything which is not in keeping with earlier work is automatically wrong or, even more worryingly, to suggest it's right because "that's what he would have done if he were here today" is to stifle our own abilities and to hide behind a bygone shield where our own would sit just fine.