Why is he only one being prosecuted?
There are still a lot of people selling on localbitcoin.
I think his case is being used to set an example and make us behave. Everyone trading cash and Bitcoins without the proper license on localbitcoins is most certainly in violation of the law. I wish DnT was in this thread. He studied up on it and could explain the ins and outs.
I think it is more about buying and selling drugs over the internet. They charged Ross with the harshest statutes that were designed for drug lords. They changed that guy in FL with money laundering when he sold bitcoin on LBC at outrageous prices (huge mark up) to a undercover cop that told him he was going to use the bitcoin to buy drugs and do other illegal things.
You may be right. It might not have anything to do with Bitcoin. It may just be a warning to anyone trying to bypass drug laws using the deep web.