Yours; "...I'm referring to their specific culture and beliefs and how they work with regards to pre-Islamic religious sites. Tearing them down may have been seen as an honor..."

As I was quoted to by a local Egyptian...their captors (Arabians) destroyed the temples at Giza...not for the stone...but for the destruction of Egyptian knowledge...the good-'ol "burn-the-books" syndrome !
Destroy what you fear the most...intelligence !

Roll stones down the hillside at Giza?
I think the last laugh is on you.
One kilometre (0.6 miles in your country) of flat land from the wall to the drop-off of the hillside...that's a lot of flip-flip-flip. Maybe they chiselled the corners round and rolled them...what do you say?
Or...they lashed the stones to the backs of camels and rolled the camels downhill...!

Yours: “...Not that has already been quarried and shaped for construction…”

That's an absolutely false statement...without one shred of evidence and the sub pyramids south of G3 prove that you are wrong...dead wrong!

Hint...about your writing style. Try making it more believable using facts...rather than fiction. That's how the built-for-kings story developed in the first place...fanciful fiction…!

Best.
Clive