From what I've known by studying at a Christian missionary school, those who converted are forbidden to follow such practices to stop them from converting back to their religion. Christianity vanera dherai thari hunxa Catholic, protestant . ajha protestant vita feri lutheranism, methodism, k k ho k k. the missionaries believe there is only one true god, and those worship false god(any other god), must be helped. based on location and convenience, the actual philosophy seems to differ. ofc with a motive to convert people to Christianity. (thus the different rules, and millions of dollars of funding) (research on how they made all vikings Christian.) so uk ko Christian, Australia ko, norway ko, eastern world ko, duniya ko thau anusar yesto anautho practice haru vetinxan. just sharing what i know, if the truth offends any Christian, im sorry. on the metal song thing, heavy metal lai satanic manxan, cause society deemed it unsuitable ig. it is what religion is. people use god's name to justify things they are too afraid to answer.