I am familiar with Dr. Alexander's NDE. Near death experiences always fascinated me because from the time I was a small child, I had some memories of the life I had before I was born here on earth. Few but clear "glimpses." So I always loved to read about what others experienced to see how they matched up with my recollections.
One in particular that rang true to me was the experience of Bettie Jean Eadie who wrote, "Embraced by the Light." I was thrilled because I knew that what she experienced was true.
There are parts of Alexander's NDE that are strange to me, but I don't doubt his experience. We don't all experience the same afterlife, a thought that elicits much controversy and contention. But I know that his experience was very valid. I am very happy that he shared his NDE so others can see that there is life after death.