It's a fantastic interview. To clarify, his position boils down to something like "the risk is very real, the chance the risk materializes is quite significant, it's not a foregone conclusion that we are all definitely going to die from it, so there is some hope, but it's likely the default outcome and there aren't many people who take it seriously or who are working on it." I would say he's net bearish on it, which is why he spends time working on trying to mitigate the X-risk, or attempting to at least.