Both of them (Ross and the hitman) can't be that stupid. Have you ever heard of a criminal, who accepts bank transfer for his services? This is ridiculous.
You do know that most criminals don't use bitcoin right? Seriously it is not hard for a criminal to send or receive a bank transfer anonymously, liberty reserve (which is what Ross used) used to let you do this before it was shutdown. There are lots of banking services out there that are available for criminals. How do you think scammers on localbitcons and such pull scams using bank transfers?
Yeah most still use cash, yet Bitcoin gets the most negative press possible constantly linking it to criminal activities because it's on their political interest.