Indeed. But the whole premise of this "vision" is based on a faulty claim that the man was "clinically dead" for 21 minutes. No, he wasn't. They don't stop the circulation in the body to do heart surgery. They bypass the heart and have the circulation conducted by a machine. Therefore, his brain was still getting oxygen. Therefore, he was not clinically dead.
It is very possible this man is telling what he thinks happened. What he fails to realize is that people under general anesthesia often have very weird "dreams".
No. . .if God were going to take this guy to heaven and show him purgatory, He would do so like He did with John, not while he was under general anesthesia.
“They don’t stop the circulation in the body to do heart surgery.” As the poster above who provides anesthesia for the very procedures you claim do not happen has pointed out (see post #7 above), you are wrong but too stubborn to budge from your error.
You cannot speak for God and do not know how He takes people to visit heaven. I have done a bit of research on the subject, and there are many near death experiencers who were under the knife and saw things happening in the hospital that they described and simply could not know unless they were hovering above. The little boy who recently wrote a book about his NDE is one good example. I cannot remember the title right now.