Reading on a parchment

Someone asked me what the point was in reading the scroll on the skin of a slaughtered animal. She suggested reading the scroll from a printed book or simply listening to a recording. After some thought, I realized that the scroll is similar to a Torah scroll, which in turn is similar to the tefillin, about which the sages said, “That the Torah may be in your mouth” [which is said in tefillin] – ” From what is permitted in your mouth, ” (Shabbat 28:1).
And I thought that the oil of study suggests that the Torah is not seen as a mere transmitter of information but as another medium that passes through the mouth like food and requires the purity of the parchment (perhaps similar to your column on the connection between poetry and Torah). And I wondered how far I could go here before it became a mere demand and how far I could make an understandable argument that makes sense.
I would appreciate the consideration.