Personally, I think the main problem is that there isn't a confirmation from either side. Nobody confirmed the nerf, but nobody confirmed the lack of nerf either. Unaware and Eviolite had been tested before getting the confirmation, at least.For such a major mechanic, I think the lack of real confirmation is enough to de-confirm it. Throw it in the same box as the Unaware nerf and the Eviolite nerf for "changes that would be kind of nice but don't actually exist."
All in all, confusion is a quite tricky matter, since it is very luck-based. There is that guy/gal who tested the confusion hit rate many times, but due to the nature of confusion itself, that could have been more a matter of incredible/terrible luck rather than a conclusive test.
If someone had to confirm this, it would be better if the testers actually checked the mechanics themselves inside the games, rather than relying on (unreliable) calculations.
So, unless there is some programmer that manages to crack down the mechanisms themselves, I don't think we can give a final verdict yet. After all, we're talking about the company who suddenly gave to Dark-types an immunity to Prankster-affected moves, so anything is possible.