I don't like the aggressive rhetoric of the likes of Harris either, but on the other hand "here are the numbers" has unfortunately a rather poor conversion rate.
Harris problem is that he represents himself as appealing to logos, but then at the crucial moments he switches to ethos and pathos. I find it annoying. It's fine to give a rip-roaring speech that tugs on the heartstrings, etc, but don't represent it as logic and reason.
