Depending on how it's implemented, it might very well be one of the non-creepy uses. As long as it isn't taken to extremes, being able to have a chance to say goodbye to your loved one could be therapeutic. Or to see them once a year during the Ghost Festival to help keep their memory alive.

It does have high creepy potential (all deepfakes do), but I can understand the appeal. Make sure you take some nice videos of the people you love, and let them take some of you. Death doesn't always come with a warning, and you don't want to be wishing you had some recordings.