I wonder if that journalist was tipped off by her team to speed up the negotiation process? I feel like the same probably happened with the Super Bowl. If it helps secure the deal, go for it. Anyway, I never care who performs there, since I'm not Brazilian.
There were some people saying they denied that Katy, Rih and Elton John were headlining back in the day, just to later confirm they actually were headlining.
So there's still hope.