This bike has never been greased save for the headset in the past 57 years... the Raleigh hubs are as smooth as any I have ever ridden on and when I tore them down to take a peek the races and cones were in perfect and like new condition even though this bicycle was ridden regularly for 50 years before it's owner passed away.
My winter bike has an AW in the rear and an old Shimano hub with an oil port up front and I use oil lubrication on this bike.
Grease has the benefit of being something you can do and then forget about the bike for a few thousand km.
On CCM coaster hubs... most of the old ones were designed to be greased while many British hubs were designed to use oil... the British hubs do not run as hot as the North American coaster hubs and also do not stop as well but are much smoother.