I liked it, and I think if you look at it as a study on the human condition you'll find it interesting too. I agree with the substance of the negative reviews, however I think labouring over the conspiracy theories was useful in that it really felt that all angles were presented and you could finish the series with confidence that it really was as the police reported.
It could have been compressed by showing less of the online sleuths talking nonsense in circles but I thought even that was proportionate in consideration of the case. The evidence in this case is brief and conclusive, and the alternate versions are many and rambling.
More than anything, it's a series for all of the people online who went down those rabbit holes, falsely accused people on the periphery and became obsessed with the mystery of it.
The real mystery, and intrigue is in how the internet works to encourage people to attach themselves to these ideas in the face of evidence.
It was a tragic event that occured in a historically awful place, which garnered an incredible public response and I felt it was worth four hours of my time to ponder that.