if they indeed blow up any ancient Egyptian sites aside from the Pyramids, I would imagine the international community howling at the destruction of heritage sites.
I'm not sure that there would be much of a difference in the international reaction to blowing up the Great Pyramid at Giza and blowing up the Sphinx. (In fact blowing up the Sphinx seems more likely than not iTTL.)
What about the museums? OTL, the Talibans destroyed most of the collections of the Kabul Museum.