The tweet's saying the govt isn't going after Tornado Cash. They've said they won't appeal the court decision. Roman Storm isn't free he's going to court because they're saying he knew his mixer laundered money so his case's continuing.
He didn't say Tornado Cash devs should be convicted for money laundering. When Biden was president American laws didn't show they were friendly to crypto. Trump's showing he wants to help crypto. We'll know if Roman Storm's free or guilty after the court judgment.