Subetherian, starting with my conclusion, your posts answer a question of mine that I've had for a while. In Hollywood, albeit it's not a modern trope but ancient, you have entities from another realm trying to come in through portals, a step beyond "demonic possession", since the demons aren't physical. What you're describing is a set of intelligences that have a physicality to them. So it's possible, that there is a realm out there, that has a material aspect to it, that is a home of X beings, hostile or not, and the realms can interact, and that there can be "realm-walkers". Another possibility is that these 'modality artifacts' are not from that world, but are permanently inbetween ours and the other one. I'm skeptical of the multi-verse theory, although I haven't investigated it sufficiently, however you don't need an infinite number of worlds, just a few.

>One of the most consistent patterns observed in credible cases isn’t about craft or propulsion but personal transformation. Encounters often correlate with major shifts in belief systems, psychological states, even life trajectories. That’s not accidental. These things seem to interface with meaning itself.

Sounds like these phenomena are 'metaphysical', on account of their interacting with people's consciousness in such a profound way and 'meaning itself'. If they're not materially solid and effectively "disembodied" that classifies 'them' or 'it' as a spiritual phenomenon/event even more so.

>cognitive destabilization
Sounds like a negative effect, if this has been observed then the suspicions, that they can be 'demons' in the old-fashioned sense, holds some water. Even in the literal greek meaning of the word 'daemon' - an 'agent', which as I understand it is unaligned.

>Start watching for how reality rearranges itself around the observer.
What findings are there of those interactions, how far can it all go?