You have a lot of faith in our justice system. So much so that nothing I say is going to change your mind.
That's not true, you just have way more faith in the people that made the documentary than I am willing to give.
They intentionally mislead and left out key material that looked bad on Avery, why?
If you have someone that you think was framed, why would you not want the whole story with all the info shown?
The same reason his defense used the framed defense, because reality and evidence pointed to Avery, and that was all they had.