If it is a new install of FreeBSD 13 then there is nothing to change, but you can add that file if you like and then proceed to scratch your head.Get out a text editor and change /etc/motd:
mark_j the cliquiness I don't like is where they pile into a thread and derail it from the subject instead of just ignoring the thread that they weren't all that interested in to begin with...
To get back on-topic, I'll repeat myself about the proper way motd should have been modernised:
By default /etc/motd text file, as it was. A more complex motd could then be installed via ports/pkg if desired.