Mind you, making people carry on emotionally does add drama. Take Apollo 13 for example. These astronauts were portrayed in the film as being highly strung out, and understandably so considering that their very lives were at risk in the middle of space during a failed moon mission. But if you listen to NASA's recordings of the actual broadcasts, even during the most critical stages the astronauts constantly remained calm, collected and entirely professional. And boring for audiences. One simple change: the astronaut who said, "Houston, we've had a problem." - this is what he said IRL. It was changed in the film to the present tense, "Houston, we have a problem." Historically inaccurate but boy does it build drama! But in reality these astronauts actually trained for every conceivable emergency, so they were actually reasonably prepared when the proverbial hit the fan. It wasn't like in the movie where they were like, "Aw crap, the rocket's falling apart, what do we do?!" panic panic panic. IRL it was like, "'Kay, no worries, we've practised this. Follow procedure."

And movies aren't documentaries - their intention is to entertain audiences. So I think that, within reason, we can cut filmmakers some slack in terms of deviating away from realism (e.g. sound in space!). Not so far away that we can no longer suspend disbelief, but yeah.