They attempted to use parts of a frozen cell, not to revive it. What they describe would be closer to cloning then anything else. I wonder here, what is the cur

They attempted to use parts of a frozen cell, not to revive it. What they describe would be closer to cloning then anything else. I wonder here, what is the current cloning rate of success for the procedure they tried here but with fresh DNA? Is there enough experience with that to make sense taking on damaged cells now?