He dances around the point so many times, but never comes out and says it (and of course he wouldn't) - The 2018/2019 lineup of iPhones is TOO EXPENSIVE and this is causing a significant number of people, particularly in "emerging markets" (i.e. poor people) not to buy iPhones.
The surprise is that they didn't expect that raising the price by 20% wouldn't have an impact like this