Not just that, but always the anchor says "For those of you just joining us..." Then does a exposition dump

I mean, it's a movie. They have license to cut out the boring parts seamlessly.

To be fair, if it was a zombie apocalypse scenario in the states, the national network news would have cut in on the local broadcast and the talking heads would be yapping 24/7 for the ratings. Every channel. There's be a good chance that you'd turn on your TV right to a newscast about the zombies.

Now something like an insane killer escaped from a mental institution would be at most a ticker across the bottom of the local broadcast after a brief local cut in when the story broke.

This is hilarious because it would also resolve that part where the person saying to turn on the TV basically needs to be psychic because they almost always tune in at the start of the presentation where it isn't even clear yet what the presentation is about.

If you click a link, then the video starts from the beginning but it also makes sense that the person that sent the link already knows what it's talking about.

Though this wouldn't really help when that same "needs to see the future to be able to point something interesting out because it hasn't started happening yet and thus wouldn't yet be worth pointing out" gets applied to events about to happen nearby.

I wish shows would have some people just confused and not really understanding what's happening, and not just for "the helpless civilians that need to be saved" but incorporating the whole "it can take time for individuals involved in something unexpected to even understand what is going on or what they are responding to". It's kinda funny how much some fiction ignores things like the fog of war, especially ones where they have a sniper that can somehow just see everything and always has a shot (often also sitting way out in the open where they'd get counter sniped pretty quickly, like hanging from a crane, which also begs some more questions).