The phrase "a comment upon" is correct and usable in written English.
It can be used when discussing or reflecting on a particular subject, idea, or piece of work, often in a critical or analytical context.
Example: "The author provides a comment upon the societal implications of technology in her latest book."
Alternatives: "a remark about" or "an observation on".
His mere existence is a comment upon its abiding hopes.
The sense of tension is added to by a continuous soundtrack that becomes a comment upon Rusty's increasingly agitated emotional internal world.
Perhaps this could be read as a comment upon the very segregated nature of our lives in the Obama era, which never became as post-racial as many predicted.
For this production chooses not to compete with the green outdoors, but to take advantage of it, turning the verdancy of Central Park into a comment upon those who would repress human instincts.
There is a matter-of-factness about the magicians' magic, a consistency about the parameters of the circus world, that succeeds both in itself and as a comment upon the need for and nature of illusion in general.
No, it was not a comment upon contemporary political discourse.
Jens Nordvig and Nick Firoozye at Nomura, who present an amplified version of a much commented-upon research report they produced last year that drilled down into the legal ramifications of a euro zone breakup, focusing on what would happen to euro-based contracts in the departing country.
Reviewing a December 2006 performance, James Reed of The Boston Globe wrote: "Odetta's voice is still a force of nature — something commented upon endlessly as folks exited the auditorium — and her phrasing and sensibility for a song have grown more complex and shaded".
She's shown to a seat at the back, but when she intervenes to correct a comment made upon a table-top model of the Abbottabad compound, the surly, foul-mouthed CIA chief (James Gandolfini) asks: "Who are you?" "I'm the motherfucker who discovered the place – sir," she replies.
Baum often uses such asides as a vehicle for wry commentary: the citizens of the Emerald City, for instance, are pleased by the Scarecrow's accession to the throne, " 'For,' they said, 'there is not another city in all the world that is ruled by a stuffed man.' And, so far as they knew, they were quite right" -- the "so far as they knew" being a brilliant comment upon rulers as a species.
The fact that this court has determined that certain mistakes were made should not be seen as an adverse comment upon her competence and ability.
