Sorry to hear. Just asking, why did you choose MIT license over something like GPL? It's not that they couldn't have copied you, but you would be in a different position vis-à-vis them now.
No, unfortunately. In this era of AI rewriting entire projects from scratch, copyright protection for software is effectively dead.
I would've chosen GPL personally, but a prototype repository already existed under MIT by the time I joined as a contributor through the fellowship. Alas.