I think the show did a good job of portraying the ambiguities in this case. Because let's be clear ghis isn't a documentary, it's a fictionalized retelling of true events. No one knows really what went on in that family, or how much of the brothers' account is true.
I think the show maintained adequate objectivity, presenting all that we know is objectively true and implying things that might be. For example, that the dad had a weird thing about ancient Greek culture or whatever, which the brothers also talked about. To me that was the show trying to imply that there might be sufficient truth.
The courtroom scenes were fantastic and follow the actual footage to a T. The acting by everyone was great. Special mention for the song Girl I'm gonna miss you and the way it was used twice in the show.
I think too many people are letting their personal experiences and subjective ideas about the brothers cloud their judgements. In the end I feel, and if you pay attention, the show really did a great job creating a somewhat sympathetic portrayal of the brothers. Like in the end I was left with a horrible feeling of tragedy. Whatever the reality or the accuracy of the case may be, the truth is 2 people were murdered brutally in their home by their own children and 2 young men lost their entire adult lives to a cruel system. And that's the tragedy the show really portrayed