I spent a little time browsing Zed's comment history (after seeing his reply to the comment you linked). It does seem to be representative of the kind of commen

I spent a little time browsing Zed's comment history (after seeing his reply to the comment you linked). It does seem to be representative of the kind of comment Zed calls "slanderous", at least in the past year or so. Perhaps there's something else, or perhaps there are comments that Zed did not respond to, that are actually problematic in some way. But, what I see is a polite but somewhat negative review of one of Zed's books. If that is "slander", then I have slandered Steve Jobs so many times it's not funny.