Your argument boils down to some sci-fi is unrealistic therefore all of it is.

Sci-fi is supposed to make you think. What if the AI told you NO when you need it - Hal 9000. What if the evil AI got out and you don’t know what data center it’s hiding in - Lawnmower Man. What if you were so sure something couldn’t escape but it did - Jurassic Park.

Actually all three of those predicted fantastical scenarios are possible today. So what’s next? Don’t stick your head in the sand - I assure you the next disaster has already been predicted, and I’m sure if you think about it a little you can figure out what it is.