Quote - So again I ask, why was it done?

When Phantom3D did the rigging, he was experimenting with different setups which could improve the handling of the Thigh bends, which present some of the worst joint problems in most figures.  Earlier rigs had four or five parts in the area, but this was eventually reduced to just the Hip and Hip2 actors.  As a child of the Hip and parent of the Thighs, posing for Hip2 can be adjusted to improve bending in that area, particularly with IK on for the legs.  I think the reasoning is also that the spine can still bend a bit beneath the area which is set up as the Hip actor.

Or such is my understanding.  It's actually quite useful, the Hip2, IMO.

Does the second hip create problems for Wardrobe Wizard's process? 

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.