Metaphysics, including Kreutz Metaphysics, requires mystic perceptions: felt truths that are deeper, wider, and more engulfing than scientific truth.
This is because scientific truth itself operates on reduced parameters, relying on the natural laws that apply in our universe and an interpretation of reality that depends on the human cognitive apparatus.
But simple logic indicates that an expanding universe like the one we live in can expand only within a larger space. So, obviously, there must be an "outside" to our universe, and different natural laws must apply, because otherwise, there would be an endless sequence of spaces within spaces, which doesn’t make much sense as a concept of reality.
This is an idea upon which all branches of German philosophy since Kant have built: that we cannot think outside of our minds, and that all objective rationalism is just an organized interpretation of the narrow perspective for which the human mind is equipped. No one can leap beyond their own shadow, because wherever you jump, your shadow is already there.
You can throw rationalism in the trash, or, alternatively, just not take it seriously.
You can liberate your mind through mysticism. Escape the confinement of your brain, and experience it like a speechless orgasm. That is what Kreutz Religion is about.