As I said, in the end, after veiwing all the angles the TMO said it wasnt "clear and obvious" that Folau was offside. You seem to have a different opinion, but sorry, I am going to go with the opinions of the professional referees. BTW my immediate reaction was that he probably was offside, but once it was slowed down and replayed, I wasnt sure if it was or not.
Without obsessing about it too much, its pretty hard to argue that it WAS "clear and obvious", so at worst its an error of degree in the analysis and if that is the worst mistake a ref makes in a game I think we would all be pretty pleased. Its probably a fair testament to the quality of the reffing in the game, that this marginal decsion on a potential off-side is the only real point of discussion!
I think your missing the point, which was he stopped the TMO from watching replays and made the decision to allow the Folau try commenting that if it needs frame by frame to decide then its probably ok. Then with Barretts try he let the TMO go frame by frame from multiple angles multiple times... That is textbook inconsistency...