the saying is that the fingering is rated and fixed by the best experts, and should not be doupted.
we have all different hands with different sizes and different fingers. maybee that counts a little too? maybee someone have a loose littlefinger, or a wierd shape on their finger that makes the fingering hard to play.
im told by pianoteacher that you must follow the fingering. maybee that counts for the hardest pianopieces.
but i remember reading like last week or something, was it bernhard or someone who said one editor just put in random fingering so to teach the student to go and sort it out for themselves?
On repeated notes, it may seem foolish to alternate fingers on each repetition, but it is supposedly better sounding.