If this isn't a written policy, it's not a good enough guarantee. If you're only judging based on Apple: Just because it takes long to be penalized doesn't mean you won't be, and Apple has a lot more legal resources than most companies.
Nothing is a good enough guarantee. They don't exist. The perfect is the enemy of the good. Stop looking for guarantees that don't exist, and start doing business with fuzzy logic - successful businessmen know they are constantly testing the boundaries of the rules. A negative result (this thing isn't allowed) from a test isn't a failure, if you do it right - it's just a negative result. Apple is on the path to severe penalties because they were repeatedly told something wasn't allowed and then kept doing it, even going so far as to do it in ways that seen to be mocking the decision.
