With point 2 you can now use a real life case. Last year the Iberian peninsula had a blackout that lasted more than a day. The combustion engine cars could not pump petrol because guess what: pumps need electricity.

You might be training him to think he’s going to be punished whenever you get home regardless of what he did.

That makes complete sense. If the point of a movie is to tell us a story, then it should be catered to be more exciting and engaging. Of course it also makes sense for someone to come up with a story that benefits on being told realistically, like a found footage kind of movie, in which OP’s suggestion makes sense.