Hollywood did, and does, a lot of things divorced from reality.
There was a lot of mostly smoke involving Tempest and Van Eck stuff back in the day. However, it was primarily dependent upon the use of an old CRT in text mode only. Even then, it only worked under nearly pristine laboratory conditions and at short range.
If you find yourself working on an old green screen in text only and see a truck with an eight foot antenna parked outside your window, just turn on your handy Tesla Coil and go about your business.
