No excuse for that.

Normally I’m sympathetic to pilots who do things, but this is inexcusable… If for no other reason than the pilot didn’t seem to consider whether the farm machine was manned.

And please note they were NOT AG aircraft.  

Hopefully, the pilot isn’t a pro who flies for a living, because his ticket needs to be seriously examined.

Pilots have lost licenses for much less (no damage incidents and no one else in danger i.e. the guy on the machine). In particular I’m thinking about the FLYING magazine columnist and retired FAA official who lost her many licenses for flying underneath an empty bridge.