Was talking about this on the last trip. It's like everyone has to have a theory (I'm no exception). Except nothing really quite fits. Take the C/A seat theory. AFAIK, the RAT doesn't deploy (if indeed it did deploy) just cause the thrust levers went to idle. Every other obvious explanation has at least one equally obvious hole in it, AFAICT.
What *is* maybe interesting is how the theories championed by the Certain seem to reflect their predispositions. Like, some people are pretty sure these goofy Indian pilots screwed up, somehow. Others are equally sure that Boeing builds crap airplanes and this will somehow come back to Neutron Jack, etc.
Witness the fact that now people are making up AAIB reports. Another harbinger of the Post-Truth World.