Makes sense. A farm is private property. You don't have the right to come into my house or my place of work and film me. (Even if you suspect I'm doing something wrong) Also makes sense that falsifying a resume in order to do so would be illegal.
This logic would permit egregious abuse to go on unchallenged behind closed doors because its private property. This cannot honestly be what you are saying?
There is a balance between the laws that might be broken in order to discover a crime. If someone commits a crime with the intention to discover another crime, you seem to feel it is acceptable to ignore the second crime?
It's actually not okay to create precedent that penalizes people that discover your crime, it only makes crimes easier to hide.