Should disks in a raid really prevent booting?

[Tom Horsley]

I was apparently missing something like the raid1 kernel
module in the initramfs in my fedora 21 partition, but
I disabled the mdmonitor service and removed the raid
filesystem from the /etc/fstab, yet the system still
could not boot. It spent several minutes trying to recognize
the raided disks then went into the dracut shell.

Should it really be utterly impossible to boot a system
that merely has raided disks connected to it which no
one is trying to reference? Should I make a kernel bug
for this?