I brought this up because we know a guy who went through a major arm issue. He was a high pick as a catcher. Couldn't hit at AA but still had a cannon arm and they tried him as a pitcher. He blew out his elbow when they changed how he threw. Three years later he is throwing 97 and cruising 94 with his original throwing motion. Pain free. No way is he ever going to change back to how they wanted him to throw.
My son never had any arm issues until they changed how he threw from the field and on the mound. He said it hurt but was told that is natural and just keep doing it because it was better for his arm. Obviously it wasn't.
There may be a reason why some people have different styles. It is because that is the style that works best for them and maybe it shouldn't be changed unless there is a problem or pain. Going against what the body does naturally may be part of the problem with the increase in arm injuries at all ages.