Back many years ago, (I won't say how many, would give my age away!), I remember being scared stiff after watching the film The Story of Dorian Gray, starring Hurd Hatfield
So yes, I’d say you nailed it! And it adds such a neat layer of thought to this whole Dorian Gray and quantum multiverse discussion. What if the painting and Dorian are like two entangled particles, one showing the "decay" while the other stays in an unchanging state? Fascinating!