No, just a much more mundane rhetorical bait-and-switch. Ranking the "greatest logician" is purely-subjective, not a truth-value. Barging in like the kool-aid-man to bellyache that Harper isn't applauding Frege in an article that has nothing to do with him, while dismissing with a wave of your hand the obvious reason that nobody does that. To put it in your debate-club lingo: that's begging the question.