A director still makes the movie, despite never appearing on film or touching the camera. Design and oversight can be a large part of the finished product. There's no doubt that Chihuly is an artist despite never touching the pieces. He's not their only artist, though. I think that his technicians should be demanding credit. Movies come with credits, why shouldn't other forms of collaborative art?
As to the specific case: living in Seattle, I heard nothing but bad things about Chihuly himself, and experienced it firsthand; he was presenting at a Sounders game, and had made a piece to be given to the opposing team. About halfway through the first half I headed in for a snack and the club was dead except him ordering something in front of me. While they were getting his order he turned and looked at me, and I said something simple and nice about his piece. He scoffed dismissively and his handler moved between us. Just came across as snotty.
As to the specific case: living in Seattle, I heard nothing but bad things about Chihuly himself, and experienced it firsthand; he was presenting at a Sounders game, and had made a piece to be given to the opposing team. About halfway through the first half I headed in for a snack and the club was dead except him ordering something in front of me. While they were getting his order he turned and looked at me, and I said something simple and nice about his piece. He scoffed dismissively and his handler moved between us. Just came across as snotty.