Perhaps. But what I've also seen is the head count of a given project is a direct reflection of the intra-org status of the person heading the project.
There's a belief - that's a myth - that if 3 ppl is good the 6 is twice as good and time will be cut in half. I think we also know - with rare exception - that productivity slides as heads increase.
That's a given.
Then there's also a belief - again a myth - that some mod dev practices can fix the increased head count issue. It might mitigate it here and there. But MDP can only do so much to fix a dysfunctional org/group.
Ultimately it's a leadership/management issue. Process and technology are too often lipstick on a pig.