The second characteristic of maya is more subtle. Anything that appears is not real. This seems like a contradiction. Anything that appears must be real by virtue of its appearance. It has a presence and therefor must have a reality. But we can also say that anything that appears must also disappear. This implies that anything that has a beginning must also have an end. Including your birth. If you are born you must die. If you believe in your birth and death, and your existence consists of the span of these points, the you will suffer, because it implies you were born to die. This sounds harsh but there is no denying birth and death are linked to each other. Finally our perception of life is bound by space and time, or perception of it is a product of maya. This points to human consciousness being finite and limited, appreciating reality in specific forms and their evolutions. It cannot conceive beyond those boundaries.
But then does anything really come into existence though? Is anything really born? Does anything truly die? Like it said anything that appears must also disappear. That anything with a beginning must have an end.
Examining what reality is not we can see what it is. Reality is unchangeable. It does not have a beginning or end, but always been and always will be. It is not bound by space and time and therefor doesn’t have different parts or facets, nor qualities or characteristics, it is absolute and infinite and therefor beyond the dimension of form.
Again reading through what he writes it just seems based on his say so. Reality is changeable and there isn't anything to prove that we are more than our bodies. The indefiniteness he speaks off is just a trick of the brain, a common sight in meditation and in NDEs. Of course they could make the argument that the brain is masking that true nature of reality by doing that, though there wouldn't be much to support that since it is the same brain that led to their experience to begin with.