Did you even read the post you're replying to. "Uncuttable" can apply to multiple properties of an instruction's execution - "atomic" colloquially refers to one

Did you even read the post you're replying to. "Uncuttable" can apply to multiple properties of an instruction's execution - "atomic" colloquially refers to one of these properties. You seem to want "atomic" to mean "the data that corresponds to the instruction cannot be divided" but it means "the execution of the instruction cannot be divided", those aren't the same thing.