True, but at least they weren't burning western texts and banning scientific inquiry then, as they do now. The irony is that the Muslim world was probably more secular and rational in the 10th and 11th centuries than it is today.
Au Contraire. They burned the stuff after they took what they wanted. Look up Alexandria and Saladin’s destruction of the previous Caliph’s library.
They were real good at filing off the serial numbers and passing it off as theirs.