I just re-watched Signs yesterday after what could be over a decade ago. This time I went in with the perspective of the very popular fan-theory that the aliens were demons the entire time. It really enhanced the movie for me and helped me appreciate the Reverend’s story more. The main theme of the movie should be on his story of believing again after the passing of her wife. The illogical actions of what’s considered very advanced aliens detracted from that and the overall movie suffered from this criticism. The theory of them being demons helped to alleviate and even enhance the movie for me and I enjoyed it far more upon re-watch.
Just to be clear , I’m fairly sure Shyamalan’s intention wasn’t for them to be demons as there are a lot of inconsistencies for that to be true. But if you can look past those issues, the movie becomes far more enjoyable with its theme of faith.