Less overall seats in the entire fleet over current managements reign, the proportion of premium seats to economy seats has increased but an overall smaller pool of seats as the premium seats occupy more floor space, and economy seats have had their density increased so occupying less overall floor space.
More points available chasing fewer QF metal seats is the trend, other OW partners have also "shrunk" themselves in capacity and and reach but OW membership and EK is still the saving grace of Qantas in the last decade of management.