Tried installing Lineage OS on two different phones today. Turned out neither was really possible while having a reasonably recent version.
Android derivatives are so... weird. Having to build a whole "image" to start your world with? It's a nightmare.
I can still install GNU/Linux on machines that are 15 years old and they still generally boot and run. And I don't need to build a separate "installer" per machine.
How the fuck did phones get THIS BAD.