It depends on how you define death. In many, if not most, of these cases the person has flatlined and the brain waves have stopped.
The main aspect of these experiences is that they are able to perceive the world from a different point of view than their physical body when they should be unconscious . And they can describe in detail what the doctors are saying and doing while they are operating on the person, typically from a view above the operating table, or even chase down the paramedic vehicle if they have passed in that. This is verified by the doctors who talk to the recovered patient.
I read Burke’s first book, quite interesting to say the least.
That was exactly my Dad's experience. He was in the upper corner of the room looking down on the nurse and staff who defibrillated him before he found himself looking over the dark water with Jesus beyond in brilliantly glowing white, then he was brought back.
Also have read some books about NDEs. How could everyone conspire to tell the same story. /s