Is Morgoth's curse really what decided Turin's fate, or were Turin's failures the result of his own actions? Arguments can be made for both.
Cowboy BeBop at His Computer: Most reviews showed a complete ignorance of the history of the text, which is somewhat forgivable. However it's rather hilarious to see reviewers who thought that it was being released (and in some cases written) principally to be fodder for another movie. (Christopher Tolkien alone owns the rights to anything that happened before the first page of The Hobbit, and it's pretty clear that he will never sell the movie rights to any of it).
Saeros insulted Túrin's mother and sister, causing him to throw a goblet at him, breaking the Elf's mouth. His response? Ambushing Túrin and trying to kill him. When he hears what happened Thingol pardons Túrin.
Androg and Forweg attempted to rape a woman in the woods for starters. Androg later killed Mim's son with an arrow. It becomes quite clear why Turin was ashamed and angered by the Outlaw's behaviour.
Obvious Beta: And Tropes Are Not Bad, but it was plain Tolkien intended to do more work on it, both in adding to descriptions and in filling in certain (sometimes fairly long) gaps between scenes. May also qualify as What Could Have Been, as one of the "longest tales of the Elder Days" could likely have been even longer if it had been brought to its final completion.
The version of the story in the Silmarillion of 1977 is less detailed and more chronicle-like, but because of that it feels more complete than this more novelistic treatment.
This version is largely based on the version in Unfinished Tales, a more Obvious Beta.
Glaurung, with his dying breath, chides Túrin for the many atrocities he committed; he notes, however, that the greatest atrocity is the one that is sleeping in his sister's womb.
What no one seems to focus on - and admittedly the incest is rather distracting - is that Túrin essentially marries a child. Yes, Niënor was fully grown, but the Niniel personality is only a few years old at best.
The description of Glaurung's belly is thoroughly revolting.
What Measure Is a Non-Badass?: When Gwindor returns to Nargothrond with Túrin, he has learned a some things about Morgoth during his thralldom in Angband, and has the wisdom to see that Nargothrond must remain hidden and wait in hope for the Valar to deliver Beleriand. Unfortunately for poor Gwindor, he's now bent over, crippled, traumatized, and decidedly non-Badass, so everybody ignores his words. Even when Ulmo's messengers tell Orodreth point-blank that Gwindor's right, the king still takes Túrin's advice and goes to open war.
It's only compounded by the fact that, typically, people who "escape" Morgoth return home as little more than his slaves or mouthpieces.
Everybody, but Túrin, Niënor, and Húrin himself qualify most.
Mîm the Petty-Dwarf as well. His hatred and betrayal were completely justified after Andróg killed his son.
Poor Gwindor had to watch his brother being horribly dismembered, then he was enslaved and repeatedly tortured in Angband for 17 years. When he finally escapes he's maimed and traumatized, and when he manages to walk all the way home his fiance falls in love with Túrin, his whole country decides he's too non-badass to respect him any more, and then the kingdom is destroyed.