The people who seem most impressed with the 15 Pro Max are professional photographers.
Ironically, they are also the least likely to replace their dedicated camera gear with an iPhone, and they admit that most users will never use the advanced camera features. A carpenter would not rely solely on a multi-tool, which the iPhone is, nor would a professional photographer.
Having a 15 Pro Max is kind of like owning a Range Rover but never driving off-road with it. That said, the Pro models will probably continue to be Apple's best sellers because the only real reason to own one is to have the top of the line model, whether or not you need it.