LeCun is the main author of the paper "Backpropagation Applied to Handwritten Zip Code Recognition" 1989, the earliest real-world application of a neural net trained end-to-end with backpropagation. "AI godfather" is fair enough.
LeCun’s research into Convolutional Neural Networks contributed to modern AI, so the nickname is quite appropriate. It’s because of this that he was pursued by Facebook.
Turing is a Godfather of AI. But you can't say there never will be another. In light of recent achievements there should be new pioneers and Godfathers. Its the nature of innovation.
The concept of AI has been around since Turing and if anyone deserves a title like “Father of AI” it’s him.
LeCun is Chief AI Scientist at Meta. They can just leave it at that.