The movie is unrealistic as it assumes that most marriages that are in trouble are ones that can be saved. Sometimes, when you pray, and let God work, He will tear down structures that are evil in your life. God values souls over institutions - ask Jesus, who healed on a Sabbath, breaking an Old Testament command. If the movie didn't mean to portray that, then it is misleading because it doesn't contain clear caveats that this message is not generalizable to abusive marriages, where the lives of family members, particularly children, should be prioritized and safety sought. Lives have been lost due to this type of message, that victims of chronic maltreatment should pray harder.
EDITED TO ADD: I just came across an abusive victim who was introduced to this movie last week and thought all she had to was to pray. What she needs is guidance on how to leave, stay safe and protect her kids. Instead, she is confused and thinks that praying her heart out will change things, when it hasn't for decades.
EDITED TO ADD: I just came across an abusive victim who was introduced to this movie last week and thought all she had to was to pray. What she needs is guidance on how to leave, stay safe and protect her kids. Instead, she is confused and thinks that praying her heart out will change things, when it hasn't for decades.