I think he said something more like I am now open to the possibility that they might be real.
But ... we know there are people who are schizophrenic, who switch from one personality to another. Which of them is "real"? They probably all are. But that does not mean they exist anywhere outside of one's head. If you can experience another you, then it seems not implausible that you would also experience "God" inside your head.
It is fun to think that there might be higher-dimensional conscious beings around us or even within us. But that's all it is, fun. There doesn't seem to be any practical implications of whether there are or not.
Another part of the article considers (quite materialistically) the possibility that "God" is something society creates in our heads. I think Sigmund Freud called that the "Super Ego". It is what makes us better survive as a species. It causes us to co-operate rather than just selfishly abuse others as much as we can. It is clear how such a function could evolve by evolution. We see it in all species, they don't spend their energy trying to kill other individuals of the same species. It's the Selfish Gene.