New net-mgmt Ports Category

Today I got my new ports email from FreshPorts and saw a new ports category: net-mgmt. This contains some of my favorite programs, like Argus and fprobe. I don't agree with many of the ports being in this category though. Why are ISIC, NBTScan, and Packit in net-mgmt when Nemesis, NAT, and IPsorc still in net?