not really worth litigating about the accuracy---like it probably is in fact close, and its unlikely intended as caricature in a biopic i imagine is laudatory.

the problem is the decision to do it all while being aware of the trope & the fact many other things about the film's depiction will be inaccurate. if there was an overwhelming artistic reason to have the player look so much like the real guy a different actor(s) shouldve been cast.and if Cooper was so good at acting like him, if he was the perfect casting choice--- he wouldnt need extra illusion to sell it