I take it you have never been told by a client that the feild down wind is 1. ready to be defoiliated, 2. not a suseptable crop or 3. weeds and it wont matter if it's drifted and later find out this was not the case??
How many aircraft have been trashed because a pilot has gone back to land with a full load becuase he was not given all the information?
Ever tried landing an 802 with a full can knowing locking a wheel to keep it straight usualy means blowing a tyre??
Some states have equal resposibility for farmer/agent/agronomist/ operator with a smaller fine for pilot.
If all states did this, it would make saying no easier and harder for a client to push an unsafe job.