In short, we aren't on track to an apocalyptic extinction, and the new head is concerned that rhetoric that we are is making people apathetic and paralyzes them from making beneficial actions.
He makes it clear too that this doesn't mean things are perfectly fine. The world is becoming and will be more dangerous with respect to climate. We're going to still have serious problems to deal with. The problems just aren't insurmountable and extinction level.
Dude - I'm really sorry, an escape hatch for the rich people who can pay to be onboard isn't a solution. We've been living unsustainably - this, by definition, can't be sustained. We need to change now so we can make that change as comfortable and human as possible; otherwise we're going to be stuck reactively responding to each successive disaster, or crop failure, or ecosystem collapse, or climate migration wave etc.