It makes complete sense too as FB makes bigger plays at pre/mid-roll ads in videos. Seems like this could be an effort to limit their liability from serving ads

It makes complete sense too as FB makes bigger plays at pre/mid-roll ads in videos. Seems like this could be an effort to limit their liability from serving ads on top of work with copyright issues and then profiting from it (or paying out a revshare to the uploader who may not be the rights holder).