If he has the deen, he W̶i̶l̶l̶ might be good to you

https://www.stocksy.com/1216854/happy-young-muslim-couple-in-the-park

How often have you heard “If he has the deen, he will be good to you”…?Sounds true, right…? See, striving for one’s deen is such a personal journey, personal enough that Allah would not ask you about someone else’s deeds, but “you, yours and yourself” alone. So, why does “if he has the deen, he will be good to you” premise not hold for a number of muslim men…?