The findings and conclusions presented in the paper and fleshed out in the book certainly have bearing on modern cultural traditions around the world, and the symbolism remains in play. Again, it isn't hard to find it. It's everywhere but people - particularly western culture - does not recognize it for what it is.
I'd also like to comment on "the beliefs and superstitions" of prehistoric, ancient and indigenous peoples, compared with the "knowledge" we have now. For the people of Neolithic south central Britain, I propose that they did not 'believe' the spirit of lived derived from a certain area of the cosmos. They knew it! There was no question in their minds that the source of spirit was within what today we refer to as the Winter Hexagon, where we find Orion. In fact, the ancient Sumerians, pre-dynastic Egyptians, Chinese, Mayans, native tribes of North America, and many, many other Neolithic cultures around the world and throughout time 'knew' the same. The evidence is overwhelming in this regard. So with that 'knowledge' there was no question that Stonehenge needed to be constructed, and the pyramids at Giza need to be built. It was not a question of should we, or could we, but 'we must, we shall'. And they did. Where there is the will, there is the way. We no longer have the will, and have lost our way. As for our own set of 'knowledge', imagine what people 5000 years from now (if humankind survives that long) will say of our modern beliefs and superstitions about the world, cosmos and creation of the universe and life within. For it is future generations who will have true 'knowledge' . . . . . . . . . . or will they?