Google should really be forced to unlock the firmware on all of their abandoned devices. I foolishly purchased my parents a "reconditioned" Google Chromebook from Lenovo. The device was covered in black plastic sheets to conceal scratches and markings on the casing. When we activated the device, it was out of support. I gave them a fresh HP Chromebook to replace it. Avoid "reconditioned" Chromebooks.
They are generally unlocked, you can easily get into developer mode and flash a new coreboot bios on most of them: https://mrchromebox.tech/#fwscript Once flashed they can boot right into Linux natively and are a regular old EFI booting laptop. You will never be able to run ChromeOS on it again though (and could perhaps permanently brick or destroy the device) so it's not something Google is going to tell people to d…
I run arch on a couple of chromebooks with wayland. the install path was pretty easy because under the hood these things are just computers. They last as long as you want them to because you decide what they do, not Google.