Yes, they're bad guys. But reading it quickly I didn't see any cases of them suing people for having had their fields accidentally contaminated. Its possible for a person or company to be bad without being guilty of every bad thing anyone says about them.
The original case you dismiss (Schmeiser) is acknowledged by both sides that the field was contaminated by passing trucks. Both he and the company have said he bought no seed from Monsanto. The court ruling said it didn't matter what he did after that (knowingly or unknowingly) since he was a person who reused seed which is how it has been done forever until Monsanto.
The reason they are after all the record on page 2 of the article is they are taking anyone who had seed cleaning done - even if they are not their customers. Its real easy to prove their seed mixed since even Monsanto admits that pollen-flow is inevitable (Monsanto's 2005 Technology Agreement).
Google Tom Wiley who is a ND farmer. He has some interesting experiences in the contamination area.
