The DJI Pocket 2 does in fact work with iPhone 15 via USB-C adapter 

I couldn't get it to work.
I was going to shoot a quick clip of showing how the USB-C isn't supported on iPhone 15, even though I could swear it had before.
When doing so, my "comparison" somehow fixed the issue by jogging something loose via the Lightning adapter on my iPhone 11.
This video shows the process... sorta.