iPad is the same iOS like iPhone, just with bigger screen. It's not a real device for work. There's no bash in iPad. There's no docker in iPad. There's no accessible filesystem in iPad. You can't connect arduino and program it with iPad. You can't install Java IDE and use it. It's infinitely far away from being usable. And making it usable means turning it into macOS.

The only possible way for iPad to become slightly useful is to provide a proper macOS in a some way. But it's still useless because of terrible thermals and will throttle on any serious load. Even laptops are barely able to keep up with ever increasing demands from developers. Tablet is just not made for work. It's good to read a book, that I'll admit. Even browser is barely usable, there's no developer console to kill that annoying div.