Eventually the video will be taken down, but by the time this happens it will be too late for those which were unable to tell it was a false video.
But, I think there are also voice changers which can work the same as deep fakes. They may also let you upload your own chosen voice. This is bad. Did the inventors of those tools didn't realize that their inventions can be use for taking advantage of someone else? It would be better if those software will be taken down for good.
And with deepfakes becoming more common and more sophisticated it will not surprise me if we move to an age in which we will have to doubt everything we see online as it will be impossible to tell apart a legitimate promotion from one which was created using that kind of software.