IANAL, but let me share with you how this works from the perspective of someone who is well versed in being kicked in the nuts by people with more expensive lawyers.
The person with the advantageous position gets to demand indemnification. Everyone else gets to pound sand.
The chances of app developers receiving indemnification from Apple is nil for some reasons that are lawyer-ish, and some that are basic math. Consider that there are thousands of app developers, and only one Apple. If the agreement granted indemnification to every app developer, Apple would be on the hook for a whole lot of attorneys in cases just like this. No lawyer is going to put that in to a contract, because it violates the client's interests. In other words, "you're on your own buddy."
The person with the advantageous position gets to demand indemnification. Everyone else gets to pound sand.
The chances of app developers receiving indemnification from Apple is nil for some reasons that are lawyer-ish, and some that are basic math. Consider that there are thousands of app developers, and only one Apple. If the agreement granted indemnification to every app developer, Apple would be on the hook for a whole lot of attorneys in cases just like this. No lawyer is going to put that in to a contract, because it violates the client's interests. In other words, "you're on your own buddy."