Maybe an oversight by Apple or maybe intentional.
NAS is my unraid server.
The closest supported server type I found was macpro-2019-rackmount so I customize the smb.service with the following script:
cp -u /etc/avahi/services/smb.service /etc/avahi/services/smb.service.disabled
cp /boot/extras/avahi/smb.service /etc/avahi/services/
chmod 644 /etc/avahi/services/smb.service
touch /etc/avahi/services/smb.service.disabled
Where /boot/extras/avahi/smb.service looks lik