Allow me to posit a hypothetical then. Druchii gives us a code to activate a Waystone. Unbeknownst to us, the code sends a signal to Ulthuan, perhaps as part of an emergency or maintenance system. Ulthuan sends forces to investigate. If said forces are rebuffed, tensions escalate. If they find out what we are doing, same thing. As a result of the escalating tensions, parts of the Asur navy are diverted to Marienburg. This diverting of ships means that the Druchii have a freer hand in raiding. There, a tangible motive from the Druchii screwing us over, assuming potentially tanking relations between the Asur and the governments behind the Waystone Project isn't motive enough.