They are ignorant about the elephant in the room. The input language of a compiler is a formally-specified grammar with well-defined semantics for each operation. It generally abstracts the computation process over a von-Neumann machine, adding convenience features and bells and whistles. What "a=1" means in an HLL is, store that value in a particular storage location, so that it can be accessed later by the same name.

The slop machine reads lousy natural human language that can mean different things in different contexts. That lousy language is then statistically probed for the most likely output correspondence, producing shit that needs to be externally verified.