This is the real historical origins of the Wu Mei (Ng Mui) legend that was altered and spun into the Wuxia legends of the Republican Era.
Wu Mei - Wikipedia
Wu Zetian - Wikipedia
(Yes, I'm aware that Wikipedia isn't an always reliable source, but in this case, it'll suffice)
The only solid evidence for Wing Chun origins, IMO, lay with Fang Qiniang and the creation of White Crane Boxing at Xiao Lian Si (Siu Lin Ji) - Small Training Temple in Yongtai. This legend is shared by Wing Chun, Bak Hok and Hung Kuen with little alteration. All three arts are structured in a similar manner, rely on the same principles and mechanics, but have evolved to include other aspects. IMO, the only way such cohesive melding can occur is by having a system that allows for it to happen. It is said that the original art developed by Fang Qiniang was a method of San Sik. This method was derived from a base of Lohan Boxing and principles developed from observations of a crane in movement. Take that for what its worth, but to deny it outright in favor of a verifiable false creation story penned by one individual in the Republican Era is a dis-justice to its actual historical tradition. There are many verifiable old documents, by first and second generation students, that detail the history, traditions, theory and principles of Fang Qiniang's art.
Here are some clips of actual
Boat Boxing.
Notice how very different it is to Wing Chun, an assumed boat boxing method.
I agree to an extent, but to try and propagate a narrative based on elements that support a predetermined outcome to an art admittedly modified in recent times is a false narrative. Ignoring key elements because we feel them to be irrelevant, unsupported, or because they contradict previously accepted parameters that support a personal viewpoint and narrative out of convenience, is not approaching the situation objectively.
Above I listed only two examples that blow a wide gaping hole in the accepted narrative concerning Wing Chun. There are many, many more, and if people (who truly want to understand the origins of Wing Chun) quit lying to themselves, they'll come to understand that the "history" they have been taught and the alterations made to support it are only propagated by those trying to protect their own self interests.