My edit includes some details. Basically, the warranty was too short and when audio (except HDMI out) broke, I couldn't get it fixed.

There was also the matter of the secure boot nonsense, where if you press the wrong key on boot, secure mode would be re-enabled. With secure boot re-enabled, the only image that would boot would be a ChromeOS installation image, which would wipe your linux install. So you couldn't re-flip that secure boot bit without losing your linux installation. This bit me once, before I got better about regular backups..