I don’t have any problem with the concept; all of the Knights wear thick enough clothing that you wouldn’t be able to tell any more than you could tell Enfys Nest was a woman. My problem is that Sollony ain’t one of the Knights of Ren we see in the flashback or in any of the supporting material. She comes out of nowhere.
How do we know that? We don’t have the script.
Because she appears in the original draft, which we do have.