State actors have a much more direct route to killing secure chats like Telegram and Signal: they firewall the servers at the national level.

There've been several state actors that have done this to both Telegram and Signal already -- both of these apps employ different ways of avoiding it but this is already one of the arms races in the world of secure chats.

FWIW, my problems with Signal losing/delaying messages are all US-based, which AFAIK has never been accused of doing any sort of state-level firewalling of secure chat apps.