Not all. See the image caption at https://en.wikipedia.org/wiki/Pyramid_Texts . You're talking of the Giza ones I assume, which were indeed surprisingly text-free. Might have been a 5th dynasty "invention"?
> By the way, the reason noses and right hands of so much statuary is broken is that that was the standard Christian way of neutralizing the powerful magic they had enabled. Without a nose, they could not breathe in altar smoke. Without a hand, they could not bless.
This appears to be one of many theories https://orbi.uliege.be/bitstream/2268/250763/1/2019%20-%20BM... .
What is definitely known is that Akhenaten would deface images of older gods, and his successors responded in kind; IIRC this would usually manifest in literal defacing rather than de-nosing.