Ultimately, they will sentence him to pay a fine and pledge not to engage in similar practices. The service code is automated and cannot be stopped or modified, so any sentences against Roman are meaningless.
If that's the result they want they didn't have to take him to court. They're saying he didn't stop crime happening after he knew Tornado Cash was used for launder. They don't want to make a deal & fine him they want to go to jail.
The case against Tornado Cash means nothing because it's not a company, just a smart contract administered by the two people. So prosecuting Tornado Cash is still prosecuting Roman Storm.
Imagine if governments start this precedent of classifying smart contracts like businesses. This would be really bad for the crypto as a whole and especially the web3 system.
It did mean some thing because Tornado Cash was sanctioned but the website's working it's ok if ppl want to mix the govt doesn't have restrictions. If they're allowing the site to work they shouldn't go after Roman Storm.