My worry is that the BSD+patent license puts FB in the position where they are able violate valid patents that another company hold. If that company is using R

My worry is that the BSD+patent license puts FB in the position where they are able violate valid patents that another company hold. If that company is using React, they will have a strong incentive not to pursue their claims against FB because it means they would have to rewrite their code. Is this a valid concern?