First, let's remember that everything we know right now is FBI public relations. This is the best story they can tell for why the public should support #TrojanShield. We don't really know what happened. But some of the stuff we do know is bad.
12,000 Anom devices sold to over 300 criminal syndicates operating in more than 100 countries, over 20 million messages intercepted. Arrests?: 800. Is this proportionate?
The changes to Rule 41 from several years ago allow magistrate judges to authorize searches outside of their districts in cases such as this one, but they don't authorize the FBI to patch or delete code on other people's machines.