If you’re gonna argue that, I found it extremely jarring as a child the first time I saw the pre-SE version of RotJ with some weird old guy in the place of Anakin.
^ and I am going to guess here that you only saw that pre-SE version after you saw the SE version .
That can be the only explanation. I saw the Shaw scene zillions of time before ‘04 and never had trouble distinguishing who the third Force ghost was. Who else was it supposed to be???