You say that you don't think that a big company will pull apps or content again, and then you provide an example of the same behavior from a big company (Google), where public outcry was limited.

The Amazon incident was why I said "or content" in my original comment. It's already happened more than once, as you note, and some cases prompted outcry and were reversed, and some did not and were not. But more importantly, none of these were cases where a court ordered the company to do this, and it matters far less (to Apple, Amazon, or Google) what the public thinks about an action that they were forced to do by law. They'll just shrug and provide the injunction.

Any application that requires making a backup and restoring after every killswitch usage is not going to continue to have a customer base, and therefore there will be few or no updates, and that will be that. It doesn't matter that it's technically possible to get around the problem, if having to do so reduces your audience by 95 percent.