I don't understand how this is hard to grasp.
Compute and API access to storage is usually the thing that bites people with cloud costs.
I want an option that says if I go over $20 on my lambda costs for lambda X, shut it off. If I go over $10 on s3 reads, shut it off.
The disconnect comes from the difference between 'shut it off' and 'clear the account'. If I read an earlier poster correctly, the claim is "the only reasonable interpretation is to immediately delete the contents of the entire account". But to you point, yes, this seems like it would be pretty easy to grasp. Stop incoming access, don't delete the entire account 5 seconds after I go 3 cents over a threshold.
I missed a water bill payment years ago. They shut off the water. They didn't also come in and rip out all my plumbing and take every drop of water from the house.