One thing to keep in mind is that movies aren't about accuracy or realism. They're about telling a compelling story and/or the visual spectacle. Michael Jai White recently did a video with Jesse Enkamp (youtube's "Karate Nerd") discussing the difference between effective technique and fight choreography. You see this in WWE. It's a principle we used in my demonstration team. The audience needs to see, hear, and feel the techniques more than the other person does. This requires a bit of telegraph and showmanship to make work effectively.
And it's not just martial arts. Take any show or movie that covers military intelligence, like 24 or NCIS. There's inevitably going to be a scene where there are active hacks going on in the CTU or NCIS system, and we'll get a chance to see how clever the bad guys are, but that Chloe and Abby are even faster and more clever. There's going to be someone saying to just cut the network, but "No, that's the last resort!"
In reality, if you are getting hacked, the first thing you do is unplug from the network. Just like in reality, if you're in danger of getting into a fight, the first thing you do is deescalate. A good exception is in a film like The Matrix, where just unplugging actually kills a human being.