I’m curious if this is an assumption or if there is any hard evidence supporting this. To my knowledge, there have been no human remains of any sort (mummified or otherwise) found within the pyramids. Additionally, there have been no hieroglyphs found decorating the walls, a common practice in 100% confirmed tombs. Thanks!
Hello I answered a similar question to yours here that addressed some of your major questions:
To my knowledge, there have been no human remains of any sort (mummified or otherwise) found within the pyramids
They used to be there but people ate them. Genuinely.
Additionally, there have been no hieroglyphs found decorating the walls
There are inscriptions within the Great Pyramid.