my friend. Let's not mix religions here. Islam is good for you. Hinduism has certain code of conduct, please don't interfere. I am not saying this because you are a muslim, but the fact that your understanding/interpretation may not be in sync with the context in which all this is practised. You think the explanation is unsatisfactory. I think it makes simple sense. If you have the slighest of doubt, you perform the cleansing pooja. Nothing to do with a person/people, but for the general benefit of public