Sorry too disagree, but autocross, drag racing, hill climbs, etc., require extremely robust components. Not ones that will break after a few runs or miles. These LSD kits seem to be robust. Read the specs and responses. Can handle over 650 hp/torque, yet be just like regular LSD in day to day driving. Running autocrosses, hill climbs, street racing for 50+ years, I can attest to the strength of good aftermarket systems. As the ads state, will outlast the standard rear end. The launch control lock up feature alone would solve one of the car's inherent problems when street/strip dragging for those that want the more out of their vehicle without trying to get engine mods that will never be available. Watching this forum for a few years, I've noticed many posts about wanting more performance but only very few owners actually have been willing, though with limited success, to try to extract more performance from their 4.6 or 5.0s. Most are interested in exterior/interior appearance, wheel/tire mods, etc. Quite a difference from the Mustang, Camaro, & Dodge forums. This situation is neither bad or good, but does ensure conservative posts for the 4.6 & 5.0s. The G70 section & Kia Stinger forum appear to be more robust in searching for more street performance, aftermarket equipment, and apparently has more adventurous (maybe younger) owners who probably bought their cars with a different intent than most Genesis owners.
I think what he's getting at is that the Traction Concepts LSD has no 'wear' component like every other mechanical component on a car that makes contact between 2 spinning parts. That LSD is purely just metal on metal which when it does wear out, which might be pretty strong and last a while, will still be wearing into the side gears of the diff and basically ruining them over time. metal on metal where friction is needed is never a good idea, just look at brake pads, clutches, a typical LSD etc., they all have some kind of wear material that keeps the components from having metal to metal contact and can be replaced when worn.
I'm not saying the Traction Concept LSD wont work but with having no wear clutches in it like a tradition LSD the metal on metal contact will eventually wear into the side gears and they will become your wear point.