I still didn’t read it in detail. From my cursory reading, most seems to well agree with my study of yugas, Mahayugas and Kalpas. The timelines in the Vedas are precise and very long. Also the Vedas pre-date all other written or oral traditions; somewhere (I WISH I could remeber) in one of the 4 Vedas, I don’t think it was one of the Puranas, there is a description of an astronomical configuration that recently was determined to have happened 26,000 years ago.
Many people just do not want to admit that maybe human civilized history goes back a lot further in time that modern history describes.
If you do run across it again, I'd love to hear the details ... astronomy is a lifelong interest of mine.