BSD vs. Ubuntu motd(5)
Tbh I find the Ubuntu message of the day quite useful.The "adverts" are benign. Right now it says to check out microk8s and also to look at livepatch.But logging in and seeing a summary of: loaf, disk usage, processes, number of users logged in, IP addresses, memory usage and swap usage, kernel version and also last login time and from what IP.That's pretty useful stuff to me.Also if you're in the position to care about motd, you're going to have the skill to change it yourself.