I dont see anything new about your post there are also some report in previous report about bitcoin being use for illegal stuff or evil doings like buying ang selling drugs or these currency being use in blackmarket.even fiat is  being use in buying and selling of drugs so i dont think it could make a big impact to make bitcoin look bad. A lot of country now are starting to accept bitcoin i mean making it legal so i hope it continue and others country too also do it and i hope that these bad stuff stop because it could damage how people look at it and to make people realize that bitcoin how good it is.