Well… first it’s not a « public » website; like Facebook and Google, you connect to a privately owned server and, while the « path » is public, the server you contact isn’t. So they are well within their right to block anyone.
But trying to make illegal a way to bypass their security is a really dangerous way and if they win, then many, many, privacy tech would have a problem.
Hope the judge know how to use a computer and understand the implications…