The part of the law that talks about content removal (Section 3, articles 18 to 21) does not say that only content can be removed nor that accounts can’t be touched. Before Moraes, judges have ordered people to be locked out of certain social media, so there is precedent.
It’s also important to note that freedom of speech ends the moment it becomes a crime. Whether said xitter accounts have been committing crimes, and which crimes, is a different discussion