Consider the evidence and decide for yourself.
To that I have to add that this is a debate between people with expert knowledge of medical science.
There have been two major studies of near-death experience published in peer-reviewed journals, that of van Lommel in The Lancet (2001) and that of Parnia in Resuscitation (2014). The van Lommel study attracted attention worldwide because the authors said they could not explain their findings and because The Lancet is one of the world's most influential medical journals, ranked second only to The New England Journal of Medicine.
Van Lommel, who has written a popular book that reviews NDE studies, says the research indicates the existence of consciousness without the benefit of a functioning brain. Parnia does not dismiss the idea but says has it not been proved.
Opinion polls (Pew Research, Gallup) show that materialists outnumber dualists in the scientific community, but that doesn't mean the materialists are right. Proponents of the continental drift hypothesis were originally outnumbered in the scientific community by a very large margin.