Yes I do.
There is a reason why forensic science is used, its because what people say is not reliable.
I am not going to believe JB is guilty based on the dubious word of an ex-girlfriend.
Ever wondered why police never tried putting an audio recorder on Julie or recording a telephone conversation while instructing Julie to bring up a conversation with JB about his "confession"? That would have got them undeniable proof! but they didn't I wonder why? 
No you don't, there is nothing forensic about YOUR OPINION.
It doesn't matter what YOU believe and you don't want to believe he's guilty because that would mean you were trying to help the murderer of five people get back to the COA.
Yes, I have wondered that and have written about it on the forum. However, the recording would have been inadmissible in court so what would be the point? Also, by the time Julie went to police, they had split up.
If the police were involved in coaching Julie, they wouldn't have let her cherry pick between what the family thought and what they knew.