Come on, people here need to read the article and not just headlines:

"I don't know what exactly happened, because if we knew, we would have helped him. But the speed and, above all, this late braking, and then he goes left or right... in these last few years he tried but it was no longer there, the killer instinct was gone."

And further

"[The timing] was related to a variety of factors and obligations," he explained. "He was informed, and the worthy farewell performance was, I think, the fastest lap."

"That still showed what potential he has, not continuously and not at the level that would have justified him coming to Red Bull Racing, but that was an impeccable performance."