Is it not possible to add seamless script adding like in Unity and Unreal? Is it a Rust limitation?

[d5364t54ytfr4]

Is Borrow checker or not having Classes limiting this?

Or is there another reason?

I mean like the way script can be added to each object/prefab instead of creating one giant file of scripts for all objects/prefabs.

Though it seems Unity in the end makes all the scripts into one giant script when compiled.