Shower scene is meaningless now
The original impact of the premiere is long lost.
Everybody knows this scene before ever watching it.
Everybody knows its music.
Everybody knows she gets killed there, with a big knife.
So that's already spoiled.
Then, add that, given the limitations from 60 years ago, we see very little in the actual scene, it looks tame and sterile indeed. Any horror that comes out nowadays shows 1000 time more, this scene would be fine for a pg13 release.
Viewers are desensitized to splatter and horror.
So what's left?