Because on every occasion – at least in the case of Signal – they tried to switch, it was a far inferior experience for them, and the leadership behind the app/service took such puritanical decisions that it became evident that the ideology was more important than the people those tools were supposed to help/protect. I don't even bother asking my friends now. In fact, now, for me as well, those (Signal, Matrix, etc.) are just things collecting dust on my spare phone.
Because on every occasion – at least in the case of Signal – they tried to switch, it was a far inferior experience for them, and the leadership behind the app/service took such puritanical decisions that it became evident that the ideology was more important than the people those tools were supposed to help/protect. I don't even bother asking my friends now. In fact, now, for me as well, those (Signal, Matrix, etc.) are just things collecting dust on my spare phone.