Not particulalry odd. I feel like they had to many variations previously. Im not sure that a 16,24,32gb m2 pro would make much sense. I mean maybe it would ve 16,32,48. But given the cost they charge foe their ram. Im not sure their is meaningful market segment for a m2 pro with 24/48gb of ram that wouldnt be significantly better served by a m2 max.
Perhaps they could have done m2 pro in 24 or 48 and m2 max in 48/96 but the base price would have increased alot and plenty of buyers dont need that much memory.
So i think they did it to streamline their offering and avoid offering a pretty meaningless configuration.