Every time #Signal says that they will pull out of a country if some law is passed, they remind everyone that they are a single point of failure. How many times have you ever heard that email will pull out of a country if some surveillance law is passed?
EDIT: Yes, of course this has the usual flurry of people saying 'Don't like Signal? Use {thing that is worse than Signal and no one who cares about security takes seriously}'. Please just stop. I am using Signal because I have evaluated alternatives and Signal is the least bad. That doesn't mean I'm going to stop criticising it and it doesn't mean I'm going to use something worse.