We can’t jump in headlong and blindly accept any QAO without scrutiny, but we do have to acknowledge that QAO is not unquestionably illegal.

De’vID’s (I think) question remains unanswered and a good one: if QAO is illegal, why is it illegal? It’s a rule we made up ourselves. If we discount using question words as relative pronouns, what is the justification of preventing questions as the first sentence?

I would not generalize that QAO is legal just because of this one example.