Any possible new technology (if you can call plastic new) would have to be proven in use over and over before this old climber would ever trust it. When I use steel nuts, I'm usually without cams or the cracks are small, constricting and any fall would mean total dependence on the protection. Unless someone trusted tells me this hardware is absolutely bomber, has benefits that the old standard does not have, I will trust my well being to the well tested steel. Go ahead, buy the plastic ones now, take some falls on them and report to us, that is, if you are still breathing...
The scepticism displayed here is absolutely warranted. Technical rock climbing is a dangerous game, we often rely on marginal gear placements and coping with additional thoughts of not just the placement but the quality of the product would be, to put it simply, crazy. I bet the proponents of this product will have some "mountain" to climb before they can sell something like this.