@Christine615 I remember when the idea of removing an outlier review or rating was floated, but it never became an actual policy, and can't be invoked as the basis for removing a review that's otherwise permissible.
Had @Jay-And-Ahna0 published a public review of the guest, a selective host could at least cross-reference that to see what he had written. But his profile appears to be unreviewed, so it's one missed opportunity. If there was no problem with his conduct during the stay, banning him from the platform just for some dumb private feedback seems like a pretty extreme course of action. Airbnb has banned some users due to their affiliation with neo-Nazi and other extremist groups, but I don't think it would look good for them in the press to penalize an otherwise well-behaved guest just for expressing wacky thoughts on "Fried Green Tomatoes." This would only throw more fuel on the persecution complex that many people in his shared ecosystem of Alternative Facts already love to flaunt.
A screening-out of people with emotional triggers would also be problematic - there's no law or rule against having the wrong feelings; we can only regulate actions, and writing a bad review is not out of bounds as an action.
I like the suggestion of quoting the guest directly from the guestbook in the Host Response, although as he is the author of those remarks he would technically have grounds to have the response deleted if he became aware of it. Another approach would be to address it honestly: "This guest left a glowing review in our guestbook, but privately communicated that his disappointment was based on our DVD collection containing a movie that offended him."
My favorite approach would be to file this one away as a bizarre anecdote to quote later on, because once the sting of the negativity passes it's actually kind of hilarious.
