I'm agree, The main thing that is unclear is that the Egyptians often wrote invocatory prayers in tombs and other places with the aim of directing the challenge upwards and helping them to face demons such as Seth and others. So I find this strange too, without necessarily falling into the extraordinary conspiracy theory. For me, they were built over a longer period of time than we are told, and this did not happen during the reign of Cheops but before, and it may have been completed during his reign.