You seem to think that 1 click is no different from 2 clicks.
I draw your attention to Amazon's one click patent and the huge influence it has had on their success. 1 click can be reactive. 2 clicks almost always requires you to think about your decision.
Explain to me, exactly, step-by-step. How forcing little
suzy to click 2 times by having to use safari, instead of 1
click inside the app. Would stop the problem you're
mentioning.
You'd make an awesome politician: Can't answer the question? No problem! Ask yourself a different question and proceeed to answer that one instead!
I draw your attention to Amazon's one click patent and the huge influence it has had on their success. 1 click can be reactive. 2 clicks almost always requires you to think about your decision.