“We’ll just block all of EC2” seems not only excessively broad but, well, lazy.
This conclusion bugged me a bit, in part because I'm old enough to remember when programmers considered laziness to be a virtue. But also because it's not evidence-based. If it were a problem faced by a significant portion of SO readers, I suspect they'd find another way to address it. But if it's a problem only experienced by a couple of readers a year, then spending much time on it would be an "industrious" misuse of resources.
This conclusion bugged me a bit, in part because I'm old enough to remember when programmers considered laziness to be a virtue. But also because it's not evidence-based. If it were a problem faced by a significant portion of SO readers, I suspect they'd find another way to address it. But if it's a problem only experienced by a couple of readers a year, then spending much time on it would be an "industrious" misuse of resources.