That’s not to say that it hasn’t been earned. For instance, with Signs he decided to show the more human side of an alien invasion. The problem here was not the storytelling. It was the alien race’s weakness. In the third act, the aliens who had previously remained cloaked in shadows came out of hiding to terrorize humans for some kind of reason that only the aliens know. When they proved impervious to the effects of a baseball bat, it was revealed that they reacted to water like it was acid. Why they would travel to a world whose surface is 70% water is also a mystery. Durr, aliens.