Yes, I do, especially given that the forum is free. In this case, the mistake means that none of the options is correct, so nobody is going to leave the question with wrong information. Even if they didn't read this discussion, and managed to remember the 'correct' answer, then they'd realise something was wrong as soon as they tried it. But the important message is that there is a way of achieving this.

Where things do start moving towards being "unacceptable" is where a question gives an incorrect but plausible answer, so anyone not following the discussion would "learn" something that was actually wrong. For instance if a question asserted that Truncate couldn't be rolled back (note this isn't a real example, but although there have been a few I can't remember any of them!)