The other half of my brain says: "Indeed... I really need to be able to control which software runs on MY devices."
Nobody forces you to use Apple softeware. I have never owned a single Apple device and never will.
The point is that the technical means for control have already been demonstrated by iOS, not that anybody is forced to use iOS specifically. Governments could require that Google and other manufacturers implement similar controls. The walls of this sort of prison have already been designed and shown to work, all that remains is the political will to herd people in and lock the gates.
And controls like that would mean death to open source OSes like Linux, because you can't develop and test an operating system on a locked down device.
I didn't say iOS was the first to do it. I didn't say that you are presently forced to buy such devices. And I certainly didn't say that desktop Linux would survive the sort of totalitarianism the tech industry has invented the means to implement. You're missing the point so severely that it's hard for me to understand where my explanations could be falling short. Are you trying to get a rise out of me?
Well if you're running an Intel powered device, there is the Intel Management Engine[0], which is a minus ring zero backdoor with unfettered access to everything. It even runs MINIX! It's not really your computer.
[0] https://puri.sm/posts/deep-dive-into-intel-me-disablement/