Just because he is in spirit doesn’t mean he doesn’t age. We finish that incarnation on the other side of life. Then take up a new incarnation with new personality and identity from within our soul group.
So he is still the exact same person as he was in the physical world. I have had him in spirit around me for a few years, due to an unresolved issue he has. I have a mutual friend with him, but I will never impart any information to anyone other than a relative of his family and he is well aware of that.