I don’t know that world (midi and music) but these seems solvable with a dongle/external device. Some quick googling shows at least a few such devices that seem to do the trick. Obviously those cost more money but even with a headphone jack you’d need an adapter for the midi input to the iOS device right?
Then again, you have to realize that your use-case is almost a rounding error. There just can’t be that people, as a percentage, that have that need and it makes sense (to me) to optimize for the largest pie slice and let dongles/accessories cover the gaps for everyone else.
Right so I need to buy new hardware for something I used to do for free? You don’t need any adapters, just plugin the midi keyboard into the usb port. With the old devices a lightning to usb converter was needed but that let you do lots of other things as well. Let’s be honest Apple removed the jack to get people to buy their shitty AirPods. My solution in the end is to stop buying iPhones and Apple products all together.
>Right so I need to buy new hardware for something I used to do for free?
>With the old devices a lightning to usb converter was needed
So it wasn't for free. You still had to get dongles.
Personally, I just need an audio interface to plug in a guitar, a headphones and speakers into my iPad. I need to buy something, but nothing that I wouldn't have had to buy with a PC either.
Then again, you have to realize that your use-case is almost a rounding error. There just can’t be that people, as a percentage, that have that need and it makes sense (to me) to optimize for the largest pie slice and let dongles/accessories cover the gaps for everyone else.