I think it exceeds that bar. If he had said "TLDR" and ended it there, sure but he approached it with humor and with a few quips I found relatively eloquent. I personally don't think there is anything wrong with that.
He is humorously criticizing the author's artistic choices. I think he did it pleasantly enough, how else do we want this to be done on HN?
In my opinion it's a shallow and tangential post. If you're going to comment on aesthetics over substance, at least caveat your comments with that and do it thoughtfully.
And here I am clicking dead comment links to read tangential posts. How about leave it like it is, where tangential posts can be hidded/flagged/killed but still available to those who want to read them. No one likes a gatekeeper.
I'm fine with leaving it like it is and didn't mean to suggest otherwise. Just saying that a tangential post has a better chance of staying alive if it's thoughtful.