I agree with everything you're saying and every single point you're trying to make here, but, as someone who's been on the other end, your responses are
exactly why people hate posting about this stuff publicly. He doesn't have the authority to speak on it (alone) but you trapped him into accidently saying something he wasn't trying to say (in fact he only said it to be nice and reply to your question - which he had no obligation to even acknowledge). There was nothing he could have said that would have made you (or me or any of us on HN) happy, no information he was allowed to give out, but on his own volition he chose to respond to and validate your questions, and you reacted by saying "Aha! I got you now!"
That said, it seems likely to me that if this somehow stopped advertising revenue, it would have been fixed before HN even noticed. "No way to fix it for at least a few days" seems very untrue, that department just isn't lead by someone who cares enough about this issue to make it happen. It's not the tweeter's fault, though.