This might be something recent. The latest kickstart doesn’t use native deb files anymore and fails when using --native-only on supported systems. This is also true when ensuring that auto detection doesn’t fail with --distro-override ubuntu:22.04:jammy.
The install script works fine when one manually adds the deb repo and gpg key before running it.
Is this intentional? It seems weird given that nothing is mentioned in the docs about adding the repo manually beforehand and at the same time the docs recommend native images over static ones.