If it impacts a user negatively if it's done wrong, that sounds pretty damn visible to me. I can think of plenty of ways to show a customer how we fail gracefully or not at all despite certain negative events. Some customers may even value that very highly, depending on the use case.
And I get that this idea may not work for you, but it works for a lot of very successful people, the luminaries of our field. You're arguing against Ward Cunningham, Robert C. Martin, James Shore, Martin Fowler, Joel Spolsky, Jeff Atwood, Bill Wake, Andrew Hunt, Dave Thomas, et. al.
Customer collaboration over contract negotiation. [0]
Who should I listen to; you, or them?