That's actually quite a clever workaround to the current rules, but rather naive of them to think Apple wouldn't fight back at some point.
It's much like the argument 'if you ban guns only criminals will have guns' and it's quite true in this case.
it's about damage mitigation, and shutting down a 3rd party "app-hot-fix" service is a good move.
it's harder to fool only apple, than to submit some naive looking thing and still have unmitigated access to changing its code.