Do you mean this controversy or the one with Shakespeare?
In terms of this painting i don't think he painted it. I think he coasted off the work of his apprentices at a point in his life since he started to financially do not so great. And for the Shakespeare one, I think wither Shakespeare is 1 person or a monicker of several play writes is besides the point because they are stories they are very well done and aren't copying others work. Rembrandt made his own paintings but he also stole credit for paintings as well.