Former NFL player Michael Oher claimed that he was never legally adopted

I never thought of it that and the way someone else pointed it out earlier where the Movie seemed to be very back handed towards Oher.

Yeah I'm actually surprised he wasn't more mad about the movie.

The movie also paints a dangerous lie. You can just come from nowhere out of the blue and almost instantly become a top tier pro at a highly skilled profession.

The movie seriously undercuts the yeara of very hard work Oher put in to become even just a college athlete, let alone pro.
He always came across as being a little distant from the movie. His take seemed to be it wasn't accurate and it made him look dumb, but he realized that it was an inspirational film to a lot of people and didn't want to take away from what it gave to others. So maybe not mad, but close.