It just has nothing to do with what we're talking about. The notion that Monsanto is suing farmers for seeds just blowing onto their fields false, and thus can't have anything to do with whether seeds should be patentable.
slow down and understand my words. it's perfectly fine and moral to take advantage of the fact that someone else's seeds have blown onto your land, but that's not an argument you can sell to a court. so publicly making a separate legally stronger argument is normal and reasonable behaviour that doesn't lessen them whatsoever