One shouldn't be too po-faced, however: the same could be said of most new orchestral pieces.
I received a somewhat po-faced reply to my inquiries.
There is no po-faced moralistic view on the matter.
At least some of us can try to do that, whereas others sit, po-faced and smug, and make irrelevant sedentary interventions.
It should be within our wit to turn those matters to our advantage instead of sitting po-faced in the corner complaining and waiting for the next row.
In addition, it's stylistically po-faced, overly pious and almost puritanical about the subject matter.