Despite the obvious flaws of The Hobbit trilogy, Thorin's character arc and his relationship with Bilbo is genuinely exceptional.
For the criticism that The Hobbit receives, I think that if you set aside the source material deviations, the portrayal of Thorin's character arc throughout the film is brilliant.
In Bag End his view of Bilbo is made up of a lack of faith in a Hobbit, and frequently dismisses his worth.
The real turning point in their relationship occurs during the "Into the frying pan segment" when Bilbo saves Thorin, and his rescue in the Elvenking's dungeons, highlight a turn in his favor.
When Smaug dies and the gold sickness takes effect on Thorin, in his paranoia he assumes that the dwarfs are more likely to steal the Arkenstone from him than Bilbo, which ironically shows that Bilbo is the only one he trusts.
Then the sudden intense betrayal and hatred he feels against Bilbo when it is revealed that the Arkenstone was given to the Men and Elves by Bilbo completely destroys their relationship.
Then it culminates into a bittersweet ending where Thorin dies in Bilbo's arms calling him a true friend.
I dont know about anyone else but I think this is really good. What are your thoughts?