Then don't buy that device. I know this will be unpopular but there is an entitlement here. I want X, X comes with insane restrictions, instead of sticking to my principles I will buy X then complain about the restrictions. I agree it shouldn't happen, but I also don't buy anything that allows that to happen to me.
There are some necessary conditions to fully consent to an agreement. If someone has a gun to your head and tells you to do something you don't want to do, it is not entitlement to comply but complain instead of "sticking to your principles".
Except when the device doesn't appear to be, but can be updated in a way that makes it obvious it does. Absolute statements like "all devices should be able to be jailbroken" or "I want things supported forever" or "just dont do x" are misguided. The world is more complicated, even on this issue. Any implemented solution will have holes and the world will be all the better for it. Progress requires things to die off.