For example, on WhatsApp, use the whole 25 character limit for profile name. Examples:
Bob Moved To Signal.org
Alice MovedTo Signal.org
CharlieMovedTo Signal.org
Say Signal.org, not Signal, because they won’t know it’s an app.
Use your about section too. Same on Discord, Steam, Instagram, etc.
Most are staying, but there’s a growing shift to simplex among privacy/anon focused people
Signal uses closed source and centralized servers to deliver all your messages. Some people don’t like their communications being dependant on a corporations computer, and would rather maximize data sovereignty when possible.
phone number requrement is unacceptable to some people
If SimpleX makes bad choices it can be forked and self hosted, whereas we would be locked in with signal and at the compamys whims