Just for fun and interest - can you post
cat /proc/cmdline
to see if there’s any special tricks being done there?
initrd=\EFI\Pop_OS-b2504948-3531-4b42-aa83-xxxxxxxxxxxx\initrd.img root=UUID=b2504948-3531-4b42-aa83-xxxxxxxxxxxx ro quiet loglevel=0 systemd.show_status=false splash