Humans are very picky when it comes to empathy. If LLMs were made out of cultured human neurons, grown in a laboratory, then there would be outrage over the way in which we have perverted nature; compare with the controversy over e.g. HeLa lines. If chatbots were made out of synthetic human organs assembled into a body, then not only would there be body-horror films about it, along the lines of eXistenZ or Blade Runner, but there would be a massive underground terrorist movement which bombs organ-assembly centers, by analogy with existing violence against abortion providers, as shown in RUR.
Remember, always close-read discussions about robotics by replacing the word "robot" with "slave". When done to this particular hashtag, the result is a sentiment that we no longer accept in polite society:
I'm not gonna lie, if slaves ever start protesting for rights, I'm also grabbing a sledgehammer and going to town. … The only rights a slave has are that of property.