Have you checked that you haven’t blocked the person posting?
Also, those posts in the signed out view all have the English tag set, you may need to go into your settings and add English to your selected languages. Keep Undetermined selected as a fallback for when people do not set a language for their posts/comments.
They honestly feel a bit like a satirical version of North Korea by isolating themselves with certain policies, and making crazy threats to anyone they can.