This clearly isn't Anna Sheridan's IPX or Max Eilerson's IPX - it has the same basic strategy and ethics, but... continuity error?

I was wondering about that too. Maybe Anna and Eilerson were part of the "front" organisation. Although the idea that the Icarus really was looking for possible bioweapons (perhaps without the crew knowing about it) would fit with Earth later making a deal with the Shadows to get that same technology. And by the time Eilerson is introduced Earth then already has organic technology, so IPX maybe have also changed with the times.