Although I personally would not say Quickseller is trustworthy (in terms of financials), I would say that he is not a pathological liar, and can come up with logical claims such as this one. Even murderers/rapists are allowed to sue others, their accusations are as valid as any other human being's.

That said, Quickseller has provided some solid, tangible proof that goes beyond just his word. I think Hhampuz should give a response, it's interesting where this will go from here.