From reading here, it looks as if Harrison was upset he had to do a bunch of voiceover narration that he thought was not in the original contract. Whatever. It worked. You can bet the farm that these clowns will fail. let me guess, Decker turns out to be a climate change denier. All the replicants are ordered to kill em.
I own the director’s cut DVD without the voice-over narration. I agree with Ford that the voice-over often diminishes the film by spoon-feeding the audience things that they are already implicit. The worst example of such narration was something like “So then he died...” in reference to Batty’s death on the roof, completely breaking the mood of the scene.