It weird so many young people do most of their work on iPhone, including producing videos, photos, and text. Yet when it comes to iPads most people don't want to touch it for work.
For a lot of use cases, iPads are worse at those things. For video and photos, the iPhone camera is night and day better. It's also easier to hold for taking those photos, while also being portable (so you don't have to carry an iPad around).
For a generation that has been texting on touchscreen for years, the muscle memory for typing on a phone is pretty well defined. In my experience, typing on a tablet requires different muscle memory and is slower.
If you add a keyboard and stylus, the iPad could be more useful than a phone. But at that point, you're spending a lot of money to improve a device that still has all of the limitations of iOS.
I remember everyone always was fascinated by all the kids in Japan that had a fancy flip phone but not a computer. Seems like Japan was simply 20 years ahead of everyone, as usual.
For a generation that has been texting on touchscreen for years, the muscle memory for typing on a phone is pretty well defined. In my experience, typing on a tablet requires different muscle memory and is slower.
If you add a keyboard and stylus, the iPad could be more useful than a phone. But at that point, you're spending a lot of money to improve a device that still has all of the limitations of iOS.