This is better off reserved for calling on that radio show Coast to Coast AM with George Noory, lol.
You want to know about the afterlife find a Gospel preaching and preferable Reformed Pastor. imho
Reading his account of what he experienced he is trying to reach ones of a scientific mind and get them thinking. Getting them to think outside of their text book realm gets them searching for answers thus his clinical descriptions were needed. Getting them searching opens their minds and possibly their hearts for The Holy Spirit to work on reaching. In other words he is trying to reach some very clinical thinkers. More power to him.
His calling & message it seems isn't to be Brother Jones of the reformed First {insert name here} church where only a certain translation of The Bible and Brother Jones views of what The Bible says are allowed. Also notice the event did get him back to communicating with GOD & thinking about his relationship with GOD. It opened his eyes IOW. Something by his own admission he had not done previously. It's obvious he had a very life changing spiritual event. What he is saying is called TESTIMONY of what one witnesses. He's seems to be telling others of his profession Hey this is very real. Seeking answers isn't a bad thing ya know. GOD uses many people for His will and to His glory not just preachers standing at the pulpit.