Binance is not the real reason, Ordi is just one token on Ordinal network.
By listing ORDI, Binance helped legitimize BRC-20, so it is very much their fault. But they knew the demand was there, so they listed it, because making money is what they do best. They're already making millions on trading fees because it is the current hot thing at the moment. Won't be surprised to see them list other Ordinals tokens in the future.