You have this a bit backwards, the "theology" of the existence of the soul and spirit beings is not based off NDE's. Rather NDE's are simply a product of the reality that the soul exists independent of the physical body. That fact is demonstrated by an extension of conscious experience outside the confines of the human body and brain during experiences of temporary stages of death, as well as spiritual and religious observations throughout the history of the world. When the body, heart and brain shut off (whether permanently or temporary) the soul can freely experience life outside of the body. And since the soul exists even while the body is well, it can also encounter many different types of transcendental observations and experiences with that which transcends physical boundaries while still in the body.
The evidence is strongly against, if not certainly against the claim that NDE experiences are the results of brain damage. The actual effects of brain damage have absolutely zero relation to NDE's lol, damage to the brain includes having physical symptoms that coincide with such an infliction....It really only exposes your lack of clarity and research of the subject according to sources and testimonies that are not speculating to support materialism. Symptoms of brain damage do not correlate with testimonies of conscious experience outside of the body.
The existence of the soul and spirit beings have long been introduced through almost every single spiritual source known to man including your Bible. At least this one feature has been universally prominent and accepted throughout the entire religious kingdom and supported even beyond that through NDE's and paranormal encounters. It isn't something weird, taboo or strictly affiliated with any single source it is a universal proposition/phenomenon. If anything, it is all that surrounds the reality of the soul that tends to become variant and contradicting.
"Beliefs" regarding what happens to souls after death are where the boundaries of sanity start to dissipate. Despite that variance in dogma, there is a continuous, harmonious thread of knowledge that the soul exists independent of the physical body and so when a soul loses their human form they move on from this world.
It is therefore impossible that a soul remains in the grave with their mortal decomposing earthly vessel. Losing the material body is as simple as removing a mask, costume or clothing, there is no continual attachment that occurs when the body is removed from the equation.
Yet strangely, Christians have adopted this unorthodox and bizarre belief that human souls will remain in the dirt until a supposed resurrection....meanwhile the rest of the spiritual, religious world continue on where spirit beings exist and permeate the entire creation of God but somehow a sect of Christians believe souls wait their demise in the grave where their own physical bodies are rotting! this is in direct contrast with evidence and the understood relationship between the physical body and the soul.
Tradesecret doesn't believe and won't accept any other options so the evidence of NDE's and any notions of reincarnation and alternative solutions simply will be avoided and shunned of course, they are just inferior concepts to him for whatever reasons. According to Trade, human souls must remain in the grave before they are appointed to hell or heaven (if they be so lucky).
Souls can go to those places, as they are very much apart of God's vast creation but each soul will move forward after death, there is no waiting period because again...there is no connection between a dead corpse and live soul.
The fear of considering concepts outside of controlled dogma is the type of garbage I was raised in most of my childhood and young adult life, the freedom of belief and logic are not pursued in strict religious squares. "You must believe this or there will be consequences"....Though, I already knew (even then) that when we die the soul leaves the physical body then and there. Not only was it innate to me but it was also clear through understanding much of the Bible and many other spiritual sources of information.
The Bible has many examples of spiritual beings not only currently existing but having relations/communication with humans, why then would anyone believe that this relationship ceases at physical death? Angels, demons, saints and prophets are permitted to roam God's creation but we as souls on earth lie in the grave with a rotting corpse while every other soul outside of this planet engages life? it is a nonsensical and impossible speculation.
