The clutch bearing is not carrying any force, it is effectively free spinning so it doesn't take much in the way of lube to make it last a long time.
My manual says to use grease on the crankshaft when fitting a new seal, so residual grease helps even if only a thin film.
My manual says to use grease on the crankshaft when fitting a new seal, so residual grease helps even if only a thin film.