Not every question that can conceivably return a bool answer should be answered that way in PR.
that's an unfair comparison, because this is a loaded question (implying you were beating your SO). The question being asked in the blogpost is asking for clarification, with no assumption behind it.
Maybe that is the actually the case (I'm not an expert in the field), but the underlying assumption of that being a hard requirement is present. Now, if Airmule thinks that they don't need to do exactly that but have another means by which the couriers could be protected, they can't reasonably answer "yes" (because they aren't organized that way) nor "no" (because that's a misleading answer from their point of view).
"Not a common carrier - this page on our website describes exactly what protections are provided: <link>"