If someone does end up pursuing a fan edit that removed the whole ‘Rey Palpatine’ thing, they’d have a good opportunity to make the final scene free of dialogue, ala the other 8 films.
I don’t think removing Rey Palpatine requires removing Rey Skywalker. I actually think Rey Skywalker would feel better without Rey Palpatine, since it would show that Rey has finally found the family she searched for all these years.