NOT baseless, true. Of the 3 pics I had checked, all were modified, I don't have time to check them all for you, mod info contained in image data. (And search pics for yourself, 'shop and compare' many variations avail).
Modification is OK when it's just for personal use. Not OK when presenting as possible proof to support your claims.
Campbell's Chamber roof blocks are Tura Limestone until proven otherwise.
THE Cartouche in Campbell's Chamber IS Authentic, as are ALL other RC's Glyphs, until proven otherwise.
"This Forgery 'theory' has more holes than a sieve basket."