Quite enjoyed this article. I would not say our thoughts create the ego. Rather it is identification with our sense of individuality that creates the "I" sense ( which forms naturally in the process of separation from mother). That then drives the self-interest and mental narratives which in turn reinforce the ego. When we awaken to our true nature, that identification breaks. Then all the narratives fall away and we begin to see the world much more as it is. Then we can have a much more harmonious relationship with the world and those around us.
I agree that, in a sense, we create our own world. But it's not a separate world the same way, except in certain cases of mental illness. Rather, it's something of a shared narrative that overlaps a lot with others.