This confirms his/her assumption for me.
When objects are promoted to QA the changes are tested against the requirements and regression tested. If a defected is found the object(s) are rolled back to development. After the bugs are corrected it's promoted back to QA for testing and regression testing again. So even though I'm not an Apple developer I can confidently answer your question: yes, the final build was tested. Christ.
And no, Apple doesn't get a pass when things don't go perfectly.
I think she/he meant "did nobody bother to test the final release build [for this specific bug that is affecting many users, because if they did, then it probably would have been identified and corrected before public release." That would make more sense to me, anyways.