That wasn't the point of the question. The question was a hypothetical to test if there was any possible response that would've satisfied the original poster.
They're not suggesting to assume good intentions about the parties forever. They're just asking for that assumption for the purposes of the question that was asked
There is no satisfying answer if your actions before are not satisfying. The question implies that the original poster cannot be satisfied, and thus shift the blame implicitly. The problem remain not what the answer is, or how it is worded. The answer only portrays the actions, which are by themselves unsatifsying.
They're not suggesting to assume good intentions about the parties forever. They're just asking for that assumption for the purposes of the question that was asked