At that point, backpressure and load shedding are the only things that retain a system that can still operate. If you have ever been in a Starbucks overwhelmed by mobile orders, you know the feeling. The in-store experience breaks down. You no longer know how many orders are ahead of you. There is no clear line, no reliable wait estimate, and often no real cancellation path unless you escalate and make noise.
promising 'Link:' argument that I hoped would explain why this pointless commit exists, but AS ALWAYS that link only wasted my time by pointing to the same damn information that was already there.