That doesn't really track. Most technologies in Black Mirror are fully implemented as-is, usually with clear and prescient knowledge of the downsides known and

That doesn't really track. Most technologies in Black Mirror are fully implemented as-is, usually with clear and prescient knowledge of the downsides known and suppressed by the owner of the technology. Snapchat is not that. It started out as an innocent messaging app and slowly mutated into the monster it is after it was already widely adopted. The criticism of Black Mirror is that it's presented as immediate widespread adoption of the new Torment Nexus 5000, which was always intended to be a force of evil and suffering. Everyone knows exactly what the torment nexus is and willingly accepts it. Snapchat only became a torment nexus after it was established and adopted, and was done this way maliciously.