I hope that the slime who made decisions to destroy so many of these ancient gems died slowly of excruciating nasty diseases.
Any limestone structures or statuary was considered fair game during the middle ages for rendering into lime mortar. A former lime mortar production spot (abandoned for centuries) was stumbled across (someone digging a basement, I forget) and it had some of the mortar in a pile or two, and unmatched parts of various unknown classical-era statues. No muzzies were involved, either.