you want to use Apple OS in any way, then you are using their licenced software.
you wanted to use the hardware for whatever, great, use it.
but explain why Apple should support you with the software to use the device in any way other than the plug in a USB port and let you load whatever software that isnt Apple's to run on the device?
Apple are under no obligation to provide their software to you.
You want your cake and to eat it too.
Just because there was a case allowing jailbreaking, does not mean Apple needs to go along and provide you the software to use their code...
Could it really be that you want all the Apple code but then just to add whatever BITS Apple doesnt allow?
If you complain then you should be called out on your reasoning.
For all your endless arguments, perhaps finally we get to what you really want.
Which isnt as stated "I bought the hardware and should be able to install what I want".
I am extremely happy to support you in that endeavour.
But I fail to see why that still entitles you to use Apple's licenced code for free.
You want to use the device however you want? Knock yourself out and develop and entire ecosystem or Android port and do it. But dont expect Apple to do all the hard work for you. For free.