If these theories had to be rigorously tested according to the scientific method no sane man could possibly accept them. There is no observation and there are no experiments. And they can't prove anything, they can't logically explain it. Most people are happy with chasing women, some chase fame, profit, adoration and distinction, but only a few are interested in spiritual life. But this is to mistake science with materialism.
Many eastern religions celebrate the awe of the universe in an incredibly beautiful way.
It seems to me that this view of the world is fully compatible with science which shows us more of the universe everyday. The universe is also a form of God and real science is also a form of God realization. But many are not really interested in this. I realize I may be paraphrasing your actual statement, forgive me please. I was referring to the scientists rather than the transcendentalists.