They wouldn’t get a court case over this. Firstly because registrars are not responsible for the content on their websites, And social media sites and other sites that allow users to post-content to them are themselves not directly responsible for the content users choose to post.

The appropriate action for a registrar is to contact the owner of the website in question, If it is getting close to the allotted time and they haven’t had a response then they take the website down. All allowable under the law without getting sued.

This registrar didn’t even bother trying to contact the site, they did not do a totally automatable and essentially free action, simply because they couldn’t be bothered.