The Romans named their years after who was elected Consul that year. There were two Consuls, so you’d say “in the consulship of Jones and Smith”. 59BC was Julius Caesar and some other guy. The other guy was so unimportant that Romans joked by calling it the consulship of “Julius and Caesar”.
He seems to be confusing “freeware”, which is basically a license for copyrighted work, with “public domain”, which is the absence of a copyright.