Thanks for that appreciation of Logan's Run ... and I totally get what you're saying. In today's cinematic terminology, they call it "practical effects," which means actual physical items and on-screen events, not just CGI. Their value is as you noted: It feels real ... visceral ... tangible.
Like the movie "Mad Max: Fury Road." So much of those eye-popping moments are practical effects, which makes the movie all that more spectacular.
I don't think we'll ever get totally removed from practical effects. In fact, as AI enters more into the conversation, I suspect audiences will yearn for *more* practical effects as they become desensitized to artificial imagery and world-building.
Thanks again for your comments.