Wow, just wow. Am i alone in thinking this is not going to fly if all he did was write some software that helps with your financial anonymity? There must be more. Perhaps he also deployed it? That would be a different story. The article is quite murky in that regard. Perhaps they don't know yet. In there is an interesting paragraph explaining what Tornado Cash is: … The ( criminal ) origin of the cryptocurrencies is…
Stephen Watt had his life destroyed because he wrote some software. He didn't use it, he didn't directly victimize anyone; he just wrote the software that other people used[1].
Case law already exists that simply writing software can be a crime, so let's not fool ourselves that prosecutors/judges/juries will even remotely consider this line of defense valid.