I think what that accomplishes is the official then says, if we had an official in the booth looking at video and a process that allowed for it, that call could have corrected in real time. Those things being said publicly by officials puts pressure on leagues to make changes to correct bad calls.
He may have also said, we knew on the field that we missed the call but it was too late to correct it. There is no process by which I can look up at the video board and see an obvious missed call and then correct it on the field. When those things are said, public pressure mounts to allow for calls to be corrected and maybe more use of technology to do it. I said earlier, because of the speed of the game, maybe more officials should be in the booth watching video than on the field. I'm not sure they can keep pace on the field. However, if there are sufficient camera angles, anyone should be able to spot penalties, etc., on video. I think the way they officiate games needs to evolve.