I think this is an excellent question. I tend to look at it from a different angle. When I hear people "arguing for the existence of a Transcendent Realm" (or a spirit realm or an astral realm or heaven or whatever), it feels to me like it downplays meaning and significance in THIS realm.
So I tend to think that any perspective that downplays the Transcendent or the Metaphysical can be a Good Thing.
This is not to say that I want to downplay NDEs and other mystical experiences. But for myself, I want to hold the INTERPRETATIONs of such experiences lightly or provisionally so as not to end up forsaking the realm that is my day to day life.
Obviously, interpreting NDEs, etc can in itself be a useful and meaningful activity, and I don't begrudge anybody who wants to overtly argue that their perspective is the Absolutely Correct perspective and accurately reflects the nature of the universe and the "realm(s) beyond."
Personally, I have been trying to see if there is a way to be neither in the "biological robot in a meaningless universe camp" but also not in the "this world doesn't matter because there's a realm of light and love waiting for us beyond space/time." Something "in between" these camps perhaps.
I have been interested in a book called
ZeroTheology, that is written by a minister who considers that religion that is based on belief in doctrine is a rather weak form of religious practice, which is appealing to me:
"If you want or need religious belief you cannot have the liberated religious life. If you lack belief you do not want or need the liberated religious life. The liberated religious life can only be had by those who think that because they neither need nor want belief they are disqualified from living the liberated religious life. A person can choose the religious path as long as that person does not need belief. When you give a reason for having belief, you are expressing a need to have belief. If you need to have belief, you have to have belief, because it is a requirement. The second you express your need for belief, the liberated religious life becomes impossible. If you do not hold a religious belief, you do not need it and therefore, cannot be persuaded to choose it. If you are persuaded that you need it, then what you have been persuaded you need, is not the liberated religious life. Any reason that persuades you is a reason that leads to the idolatry of the belief paradigm."