I read it as that this guy disagrees that it's happening. But taking the path of "never say never" he agrees that it might happen far in the future. But there i

I read it as that this guy disagrees that it's happening. But taking the path of "never say never" he agrees that it might happen far in the future. But there is no sign that it's happening. Not even any sign that it might happen. No progress in 50 years. Zero. That was his point.