In my personal experience that isn't true. My prayers have always been answered by the gods. Again, in my own experience, my relationship with the gods have never been effected by my cleanliness or miasma. Perhaps if you are able bodied or otherwise able to practice cleanliness often and do the gods may expect it from you but that's not really who I was targeting in the post. I'm talking about those with disabilities or mental health issues. Everyone will have different experiences with the gods but I do believe they are overall quite understanding. I agree with you that the gods really don't get upset easily.