Mike Pondsmith, who is the creator of the Cyberpunk 2020 pen and paper RPG which the upcoming game is based on, said that a lot of thought actually went into creating the technology and lore behind the original tabletop game, and only included stuff that could tangibly be part of reality.
Source: N4G PC Cyberpunk 2077- Devs Actually Consulted A Neurosurgeon For Brain Cyberware Implementations