In any situation like this where facts are very hard to come by and opinions (as educated or informed as any of them may be) are plentiful, I think about my favourite quote “The things you don’t understand you can make mean anything”. Blitz is a hot bed for this. The truth is none of us know if anything has changed, if it has what that is or when it changed. All the theories are nothing more than an attempt to rationalise the performance that was dished up, to make ourselves feel better about it. It could be little bits of everything that’s being speculated on. It’s unlikely to be one big easy fix problem. I doubt that we’ll have much clarity on what’s going on for quite some time.
I think Richard Young might have had this in mind when he constructed the strands of a cable argument for WADA/ASADA when CAS stitched up the Essendon 34.
Your right, none of us know.