Because it was all myth and no substance. All political parties use stories to justify the cause. In fact some historians argued that so called Banarsenas is actually Bananarsenas used to live south of Bindhya and nothing to do with monkeys and a fight occured between soldiesrs of northern kings and soldiers in the south. Tulsiram had written a simplified version of Ramayana with many deviation from Valmikis Ramayana and the cow belt had taken Tulsidas Ramayana as gospel truth.
