> By the time the FBI comes knocking for your devices, they have a lot of evidence, not a list of hash collisions.

Not necessarily. The FBI knocks on your door when they have convinced a warrant-signing judge, that’s there is probable-cause, or that additional information can be collected to build a case in which the defendant will ‘plead’ or make a deal for sentence reduction. 90% of defendants make a deal and never go to trial because by that time the stakes are so high a guilty verdict includes the harshest possible sentence.

FBI only needs to convince you they can win a case or the judge that there might be fruit behind a locked door, they don’t need direct evidence. It’s really up to the judge.

I doubt it, all they need is this stuff and they can get a warrant to rummage through your stuff and take all your computers, usb drives, etc and also put your name on a watch list and your permanent record. Much like newspapers retracting mistakes if the story doesn't pan out, it goes on the back page. Plenty enough to wreck your life.

No, the FBI's job is to investigate whether or not a crime has been committed. They'll do this by getting a warrant for your devices, and then take them and scan them.

Right, because humans are infallible and never abuse their position either.

And we are not talking about some underpaid contractors making life altering decisions.

And we are also not talking about a system where just a false accusation can and will destroy one's life irreparably.

In a proposed system that has yet to be deployed?

If we reduce it down to "someone being accused of a crime but later being found innocent", then there are several, and when it comes to sex crimes, the accusation alone is enough to ruin someone. People don't care about minor details such as the fact that the person was later found innocent. To them, it's the same as getting off on a technicality.