@fobvius,
Well it has everything to do with Physics since its inception and more so these days...you see "Naturalism" or and "Materialism" are by definition a Metaphysical stance/claim, they cannot be proved from Physics, they start with the assumption our senses are not deluding us which of course cannot be proved from within...one, including me, assumes Materialism it is right but it is nonetheless a Metaphysical position. This is not disputed by anyone informed.
What about our current day and age you might wonder?
Well as our society became more and more technological, in a way more and more abstract, as we started to simulate 3D worlds in games, as movies like the Matrix and similar started to show up in pop culture and things like Multiverses and Holographic Universes started to dominate Physics, the so famous coinage "it from bit", well, never were we so close to Metaphysics as we are now...our debates in theoretical Physics are full of Metaphysical claims made by naive scientists who are not aware they are in deep Philosophical and often Metaphysical debating...
...as for down to Earth even in the so called common day life all of us are fully dependent on electrons popping from our credit cards to make digital and "physical" transactions...with Einstein time became relative, my feet are younger then my head, and our GPS wouldn't work otherwise...
You see the idea that Metaphysics is only about Gods and ghosts is extremely uninformed...I am an atheist and still it never crossed my mind Metaphysics would be dead because of it...like some well educated Metaphysicians usually say, they have tried to kill Metaphysics since it started to this day and they always do it with some more Metaphysical claims...