Some people believe subjective experience is more "real", non-illusory, than external objective reality, which is an egocentric self-deluded worldview and selfview, as if matter and objective reality is simply an "illusion".

This is the foundational premise of postmodern academia in the liberal arts and sciences. I think it goes back to Nietzsche's "On Truth and Lies in a Nonmoral Sense" and a bastardization of Derrida's deconstruction.

A number of the functions you are delineating above are perlocutionary in terms of Speech Act Theory. Admittedly the rather remarkable consequences of some speech acts is surprising in the extreme, I found myself wondering how much of that could be tied to something akin to a placebo effect. Great food for thought!