The “Port/Starboard” hit my ears too! Whatever, if the pilot understands, who am I to argue as a former Mil ATCO!
However, during my time as GATCO at HQ 11 Gp (remember them?) I spent a lot of time working with my FC colleagues getting FC and ATC to use common terminology and rules, culminating in a joint ATC/FC tour of the SOCs to explain it all. It made sense, when both sets of controllers were batting aircraft around in Mandatory Radar airspace at high speeds!