Anna Bean’s review published on Letterboxd:
In my review for 2001: A Space Odyssey I hypothesized the existence of a better film about a man reclaiming his emotional drives in a battle against a murderous AI. I had forgotten that movie already exists: it's Blade Runner.
I may be in a huge minority here, but I absolutely hate the "Deckard is a replicant" theory. I actually think it undermines the central theme of the film: the exploration of the desires and feelings that unify us all as people, whether (in this case) human or machine. Deckard is ultimately able to reach across the divide to understand Rachel and Roy, despite his fundamental biological difference. That arc loses its power for me if it turns out that his understanding stems from him being a replicant as well.
It also seems to be a significant point that the replicants in many ways actually seem more human than the human characters in the film. Roy's group is highly emotional, close-knit, and driven for survival. Conversely, when we first meet Deckard he is repressed, isolated, and regarded as a killing machine. But he embraces his humanity over the course of the narrative -- shown in his growing distaste for killing, his affection for Rachel, and his desperate fight for his life against Roy.
And anyway, Harrison Ford is going to be in the sequel set 30 years later, which as good as proves that Deckard is human, as far as I'm concerned.