No you shouldn't. I agree in principle and in action what Apple is doing, but at the same time I disagree that it's fantastic for the most part - there are concerns. You and I can be smart people and navigate our own security, while others cannot. If I wanted something different, however, I have no choice with Apple, despite our own levels of comfort.I am indirectly paying Apple for a service. I know that everything I purchased through the App Store, payments are safe. To my knowledge, there have been no publicized breaches of the App Store payment ecosystem.
Do you expect the average consumer to do penetration testing of the payment processor? Should I need to familiarize myself with the refund policies of 20 different App Stores?
Apple acting as broker for the entire Apple ecosystem is a problem though. I should be allowed direct payments if I choose, and accept my own risks -- or allow the developer to accept those risks.