The CT claim a lot of things but doesn't make them remotely reliable.
It doesn't make them always wrong either. Therefore, in reality, they are partially reliable. If Jeremy Bamber is innocent, then by default you must agree that our entire justice system from Bews upwards, including Dickinson, COLP, Stokenchurch, the 2002 appeal judges, the 2012 CCRC etc, are all unreliable sources.