If working for a murderous government that sends drones to bomb kids overseas, invade vietnam and iraq, imprisons innocuous non-violent offenders for decades, funds nun-raping militias in central america, etc doesn't give one a guilty conscious I honestly have no idea what would. It's got to make you feel far more guilty than whether you put on a form you grew a bad plant or not.
>How do they find that person? How do they blackmail them?
Finding someone's ex is not complicated. We're talking about blackmailers so I think a blackmailer knows how to... blackmail. And the example I gave was just one of a million possible scenarios I can imagine an enemy using. The point was using something fake is likely as easy or possibly even easier than using a real crime for the purposes of the enemy, and thus the ratcheting effect you describe is immaterial to whether they start with the bad plant grown that wasn't listed on the form or because they told the compromised person that they'd reveal the false criminal allegations.