If Signal want maximum security / privacy, why not just make all messages auto-delete after a week (rather than their current stance that you lose them when you

If Signal want maximum security / privacy, why not just make all messages auto-delete after a week (rather than their current stance that you lose them when you decide to use Android when you're currently using iPhone or if you lose your phone)? 4/5 of their last few tweets all seem to be pitching themselves as an alternative to WhatsApp / Facebook / targeted advertising? Realistically though their current position is you have to choose privacy or backups. "We believe in targeted admirizing, not targeted advertising. Happy Valentine's Day from all of us at Signal." "We've discovered that @tecnomobile devices (some of the most popular phones in Africa) enable notifications for @Facebook apps like @WhatsApp, but block Signal notifications by default. Privacy should be the default." "Facebook, Instagram, and WhatsApp trying to collect your data when you're on Signal" (confused guy gif) "If you see the shadow of looming advertisements in your current messaging app, make an early Spring to something better." "January just ended, but if one of your New Year's Resolutions was to break up with Facebook there is still plenty of time."