Does the law stipulating defend-or-die say one has to “stop” others from using their trademark, or does it just say one has to “defend” their trademark?

While a company does indeed have to DEFEND their trademark, they don’t have to necessarily STOP what’s creating the problem. They just have to assert some authority over it, like rerouting revenue towards them or getting some rights to the fanwork. They can even just have the infringer pay $1, thereby defending their…