Yes it can, because all the transactions of bitcoin are anonymous and the corrupt people needs such type of platform to save their black money and to transfer them anywhere without taxes and without government consideration. Everything can be use either in positive of negative way, this is the negative use of bitcoin to do corruption.
Yes it is true, and it is an irrefutable fact, anonymous makes everyone save money to bitcoin which is money from their corruption, even bitcoin is safer and can not be traced by anyone.