A group of worldwide researchers have created image analysis software powered by AI/ML technology to detect fake art masterpieces. They have used their software on a Raphael painting and discovered that one section was likely painted by someone else.https://www.notebookcheck.net/Group-of-worldwide-researchers-create-AI-powered-software-to-detect-fake-Raphael-masterpieces.788162.0.html
If people can't tell whether it's fake or not, what does it matter? Just enjoy the painting...
Uh, enjoying is one aspect. Culture history and prices are other aspects.