With Fedora 35 as well as current rawhide the list of supported
devices displayed by arm-image-installer is a subset of boards supported in
/usr/share/arm-image-installder/board.d and /usr/share/uboot. That' s a bit
irritating, at least for new users.
Is this intentional due to a special meaning of „supported“ or rather lack of updating?
A little bit of both. Some devices we build the firmware but we don't
necessarily have the ability to test them, some are so similar to
other devices we can be confident they should be OK, others we can't