Eff it, I will say more.
I think you confuse supposed changes in game plan (which sort of contradicts those who claim Roly has no Plan B) to changes in execution efficiency, fitness and confidence.
I would lose confidence after half time, if every time I won the footy and went to kick it downfield, I saw, not as I had seen in the first half 3 or 4 forwards leading to my kick, but 3 or 4 forwards about 20 meters away leading away from me with no real hope of me executing a perfect pass, and no real hope of winning any more than 20% of the contests. That is what we see, and it does not work. Against the likes of Carlton and co we end up just beating them, and don't get a percentage boost, against the good sides we win about 15 to 20 % of games, narrowly, with another lack of percentage boost, and lose 10% narrowly, Ditto % and lose the rest by big margins, destroying both confidence and percentage.
As for fitness, the continuous end to end sprinting is not sustainable. Other coaches have seen this and changed the way they play. We are still stuck in the early 2010's and suffering.