Might be a plus for your organization, and it might be devised as a trap by another. It's like the biggest weakness question.

Oh, we can't hire someone who has made a mistake THAT big.

You don't want to work for a company that has that attitude anyway, honestly. That shows they have a poor attitude towards problems and probably will overreact to things like missing deadlines or pursuing a solution that ends up not working, etc.

You'll never know if it was a great company with a bad interviewer. It's better to use all the advantages you can to get through an interview and get the job to see for yourself. I don't think you can learn anything definitive from most interviews - they're mostly subjective, unscientific voodoo.