Your claim that a 50 year rock legend that is on tour with Willie Nelson and John Mellencamp, surrounded by the industry and crews would have to leave to go down to some shady neighborhood to score some third rate drugs in person is ridiculous yes.
Does Bob Dylan even do drugs?
Dylan has admitted that he enjoys pot and hash... never admitted to using harder drugs. Who knows for sure but him and those closest to him. I’m just saying it’s always possible.