I installed IncusOS and I have to say kudos! The installation process went smoothly. (The only issue was a partition already on the disk caused installation to fail the first time. Booting into a live USB image, wiping the partition with sgdisk -Z /dev/sda, and rebooting back into the IncusOS USB installer solved the problem.)
Note: I chose to use the default OIDC as I have not yet created my own.
I added it as a remote per the documentation:
$ incus remote add IncusOS XXX.XXX.XXX.XXX
Certificate fingerprint: <fingerprint>
ok (y/n/[fingerprint])? y
URL: https://sso.linuxcontainers.org/device?user_code=<code>
Code: <code>
My question: is the fingerprint and the code sensitive information that should be protected?