Signal does have a censorship circumvention feature in the advanced settings on iOS which may work when this hits provided you already have the app installed. Never had to use it though.

As somebody who often ends up using Reddit like Stackoverflow and in some cases needing the Internet Archive (IA) to find the original post after it’s been deleted or garbled, I think this is a wakeup call for those go to Reddit both to get technical help and to post it. More than ever, Reddit is becoming an unreliable place to find answers for old obscure issues and if they are going to lockout places like the IA then I think it’s time people stopped contributing their solutions to Reddit.