People who still believe that Bitcoin or any cryptocurrency for that matter can lead to more usage by illicit industries like narcotics are not updated with the fact that all transactions are recorded on the blockchain and that anybody can view them anytime - unlike transactions with paper money where the trails can stop once the money is already out from the banks or any financial institutions.
This is the reason why there had already many convictions on the court using the transparent transaction records using the blockchain technology. Sadly, many backward countries are using this alibi but what they are actually afraid is losing total control of the monetary system they forced on their people and losing this control can be disorienting for politicians. Sadly, leaders in Bangladesh are not briefed the right way on Bitcoin.