This is the paradox of tolerance.
https://en.wikipedia.org/wiki/Paradox_of_tolerance
Each of Chicago Review's two choices (to publish, or not to publish) will generate disapproval.
My personal view is that deplatforming intolerance is ok -- that the Chicago Review are right to deplatform intolerance.
Was Kunin's article intolerant and who decides? I have no idea, an uninformed opinion at best.