How do friend groups deal with members who might want to drop a potentially controversial in future viewpoint, let alone a politically charged opinion? Any use

How do friend groups deal with members who might want to drop a potentially controversial in future viewpoint, let alone a politically charged opinion? Any use of a non-e2e service as a replacement for an e2e service basically means either self-censorship or recklessness. The data is not going away, and if context changes can implicate everyone involved.