Gracies did not need story or legend for example . . .
The amount of Rickson worship and the like on BJJ forums, and some of the elastic truth in “The Gracie Way”, show that Gracie myths and legends are in fact propagating.
It’s probably best to concentrate in the present and future of Wing Chun, and developing your own ability and understanding, rather than on which particular practioners from the past the Finger of the WC God might or might not have pointed at.