I'm not the author, but I do work for Urbit.

Sure, success is impossible without survival. But survival without e2e crypto can't be success, which is why it's baked into the system. Some risks are avoidable while some aren't.

How do we mitigate this risk? Don't give the FBI any reason to worry about us in particular. Don't market to unsavory types. Be above board and make a useful service that lots of people use. Nothing more complicated than that.