Can't agree strongly enough. Even with meditation, where the whole point is (in a sense) to wake up to one's entire field of experience, people are generally unwilling to dig under their own metaphysical layers. They write this off as "oh, I don't do metaphysics." Yes, you do; you're just unwilling to face it.
I updated my post above with a link to a first draft of a site where I go into a little more detail.
I'm not sure from what you wrote that we have the same definition of metaphysics. I'm referring to a specific branch of mainstream academic philosophy. [1]
I think we do. "Metaphysics" refers to both the branch of philosophy as well as any particular system of metaphysical beliefs. We all subconsciously (and sometimes consciously) carry around a metaphysics in the latter sense.
I updated my post above with a link to a first draft of a site where I go into a little more detail.