Why do people think "That’s just sci fi!" is a good argument? Whether something happened in a movie has virtually no bearing on whether it’ll happen in real life.

Imagine somebody saying “we can’t predict war. War happens in fiction!”

Imagine somebody saying “I don’t believe in videocalls because that was in science fiction”

Sci fi happens all the time. It also doesn’t happen all the time. Whether you’ve seen something in sci fi has virtually no bearing on whether it’ll happen or not.

There are many reasons to dismiss specific tech predictions, but this seems like an all-purpose argument that proves too much.