No. The regular iPhone sells great. There is a rush by folks like us to get a Pro version. Then the normal people end up looking for a new phone, go into an Apple Store and pick the much cheaper, but still new, regular iPhone. Also Apple has decide to manufacture the regular iPhone for years and just keep it around with an increasingly cheaper price. And this year with RAM being the same and chip being an upgrade, this year's iPhone is very compelling now and has the power for a three-year sales cycle. It will sell a lot in those three years.
The SE, I think is truly just kind of its own thing and not just a cheap thing. I think right now it is a route to maintaining the Home button. In my family, this helps my elderly mom from having to learn the swipe gesturers while she stays on a reasonably capable and current iPhone. And it keeps touchID as a thing for folks who don't want to use FaceID. These may be niche needs, but in Apple world that niche is probably millions of iPhones a year. And Apple sells it new and cheap.