Thank you, Zentalk, for sharing this interesting and thoughtful text.
I would like to express a brief opinion on the final reference you are commenting on.
In my experience as a reader of literature, poetry has always been able to speak to me in a very intimate way and to get to interrogate my inner life in a very valuable way.
That interior mirror in which he becomes and that scrutinizes sensitive aspects of life, can also, very often, show us our strengths.
In this I think that poetry has a practical meaning that is not always recognized.
A hug!