I don't think there is anything wrong with how they are using damping, if they use spring only to store a big hit then it's just going to be a big rebound, regardless of the spring, they still need to dissipate that energy during the compression and rebound stroke. It does seem like a technology which would benefit from rebound damping adjustment as well, but if they had active spring adjustment then that is going from a semi-active to a full on active shock, which may be amazing, but would sure cost more and have more parts to break.
As for who needs a 6k set of shocks, well need is a strong word, but who would buy a set? Me, if they made them for my G-Wagen or could be bothered to even return my emails saying they never would, but of the two emails I have sent them in the past 6 months I haven't so much as gotten a response from them, which should probably be of concern to any potential Jeep or Raptor buyers too. I'm actually interested in converting my shock mounts to Jeep style, then throwing a set of these on my G and emulating the can-bus data it needs to work, but haven't pulled the trigger as their customer service, or complete lack of it, is worrisome.