I suppose you are right Jane,a JB scenario including the Aga burns may indeed sound like fiction! 
The problem for those who believe JB guilty is that for years the only
real evidence against him has been the SM and the testimony of a jilted lover who is a proven liar and a fraud. The SM has been undone by many including myself, there was always 2 and it was the main plank of the prosecution case.
Overtime the remaining circumstantial evidence like bike rides on sea walls and windows has been chipped away. They are seen for what they are just stories made up to cast JB as ruthless money seeking killer.
They are now reduced to 'over the garden fence' tittle tattle and gossip with no evidential purpose.
He said this which means this. He did that which means this. It is all about how they know what people were thinking. Many of them act as if they are mind readers. On and on it goes, reheating the same old tropes and bad mouthing JB.
As soon as anyone dares to suggest innocence and puts forward a contradictory point they are verbally savaged. Look what has happened to Bill Robertson for example. They do not try to dismantle or challenge the idea/theory they hunt in a pack to beat down sensible suggestions that have some value without thought or reason. They behave as if innocence belief is the work of the devil and requires the protagonists be put in the stocks or burned at the stake. They need to be put in a straight jacket and locked in a padded room.
Their lack of intellectual rigor is astounding. Just watch over the next few days as they snipe and sneer without any
real evidence to support what they say.
They are lost in a dark cynical world where they are totally right in their beliefs and everyone else is a heretic.