This is great. People should never use the number associated to their SIM card anyway as it allows telcos and others to track location and more. You can switch

This is great. People should never use the number associated to their SIM card anyway as it allows telcos and others to track location and more. You can switch your real number to a VOIP provider such as voip.ms and use Linphone or other app for SMS. Use burner sims you pay for with cash such as Mint Mobile and only activate/use them away from home network when needed. If Signal does enable creating accounts with non-identifiable user names instead of phone number, then it will be a great improvement and a protocol that can be used for activists.