You are creating one of those arguments that really add no value. Really, if your app is succeeding you might want it to shut it down? No you are just creating another strawman argument because you see a service not offering one feature you MIGHT want. Seriously, get over yourself.
And AWS is the only service that supports both, and any finegrained solution in between, by triggering programmatically actionable alarms.
You just have to set it up, and if you cannot be bothered, AWS isn't the service for you. If you don't want to do your own cooking, fine, but don't whine about the grocery store not providing you with your own personal chef.
All he asks for is a reasonable feature that can be enabled or disabled as the customer wants. You may not need the feature, he does.
This is hacker news, ie for people who like tech, like to ticker with it and play with it. What is so bloody wrong with wanting a safety button so that you don't ruin yourself that you have to throw out insults?
