As for the grafittii in the Relieving Chambers of the Great Pyramid--the veracity of the disputed Khufu cartouche can be easily determined. Vyse used dynamite to blast open these 'chambers'. As such, a fine layer of blast residue will be on top of these glyphs. If these glyphs were placed by Vyse then they would have been done so AFTER the blast, therefore, the blast residue will be UNDER the disputer glyphs. Forensic science should be able to test this quite easily. Curious why it has never been done.
If you accept the inventory stela as accurate then you accept that Khufu built the great pyramid and it matters not what you believe about the glyphs
If you don't accept the stela as accurate then it tosses out the part about Khufu making repairs to the Sphinx.
If you accept from the stela Khufu's repairs but not Khufu building the Great Pyramid then aren't you cherry picking?