> Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith.
It's talking about how we all talk to each other. I think it's main purpose is not to lessen criticisms for corporations so much as to keep the discussion constructive.
The parent comment actually seemed spot on to me. The rule is to assume good faith of your interlocutors. The parent failed to assume good faith of a billion dollar corporation. I think it's reasonable to push back against being asked to tone down the latter, while honoring the rule for the former.
That is a metaphor made with an industrial grade cement mixer.