You're right, there are no "guarantees", but nopara73 also can't just wait for a government agency to sanction WasabiWallet, and have the police come to his home and arrest him.
But you realize option move to different country exist, right?
But he only had two paths, shut Wasabi down, or block tainted outputs. He chose to block tainted outputs.
More than two actually. Few member already mention other possible paths.