I think your friend needs to remember that sci-fi is for science FICTION. It's not real and shouldn't inform your understanding of the world around you in a concrete way.

That's in-person. Online... especially in this sub... I just block accounts that post negative shitposts on AI and Singularity. Being CRITICAL is not the same as being negative/pessimistic. But in the face of so many low quality posts lately I'd rather just block and move on.