Scarlett Wampus
psychonaut
There is some consensus on the qualities of transcendental experiences but the interpretations are widely different like you say.There is some consensus about transcendental experiences. Maybe there is more consensus than my analogy of a car wreck would suggest. But it does not seem safe for us to say that transcendental experiences are designed to communicate something to us.
Here's a thought experiment: If the electromagnetic spectrum that you could see with your eyes was mixed with some different wavelengths like infrared, x-ray, microwave, gamma-ray, etc. but the type of wavelengths available to your perception were not constant and were in fact were chaotically random, infrequent and your sensitivity to them varied, what would it do to your understanding of what was around you?
Now try to imagine that this was happening to you and others at a time before there were any scientific instruments capable of measuring the electromagnetic spectrum and thus no established scientific model of the electromagnetic spectrum.