Just my point of view, but what is irksome about Apple here is how Cook tried to justify the cost of the iPhone because it has a camera, music player, etc., as if this year's iPhones are the first to incorporate these things and how he said Apple's aim is to "serve everyone." Either be honest and say that you want to make as much money as possible or don't say anything.
He's not really being upfront like you mentioned. The iPhone's success its own issue. He wants to keep his investors happy so keep making money where people aren't upgrading as frequently, the only way to get around that is to charge more $$$ per phone.
I firmly believe the XR will greatly outsell the XS and XS Max but a long shot. That, and the Watch Series 4 I'm guessing will be another record year for Apple in terms of profits.
Historically in the past the iPhone at launch for pre-orders has sold out and shipping dates have really slipped. But many people have reported the day after the pre-order launch date, you could still order a XS/XS Max and not see really any delay in shipping. That says something there compared to years prior.