This video is very misleading.

• The reconstructions only affected some of the stones, which were already damaged or fallen, not all of them
• We have several photos from the 19th century, so you can compare the current state with the one before, the first reconstruction was in 1901

It’s not some secret, you can read this on wikipedia, with more facts, e.g exact list of moved stones, not just 4 photos in a loop