For almost five years, we have been doing the exercise of replacing stock OS on phones. We can tell first hand how oftentimes unnecessarily difficult/impossible it is. In the interest of reducing the insane amount of e-waste and truly being in control of our devices, we need laws that allow us to install any software on any device!

Thanks to @fsfe for writing a nice open letter about just that, we happily signed it:

https://fsfe.org/activities/upcyclingandroid/openletter.en.html