Sebastian, boring?! He's awesome! First of all, this columnist clearly knows nothing about butler archetypes or establishing relative power dynamics in a system where a high-level demon is living among normal humans. Second, he's got no eye whatsoever for character interaction or personality. They're the only thing that make "perfect" characters work long term (for example, the valet who basically created the character type of the "perfect butler", Jeeves in Jeeves and Wooster), and Kuroshitsuji delivers 100% on giving these people interesting personalities and chemistry! And not even just Sebastian and Ciel's obvious subtext... the whole cast meshes brilliantly.

In short, that guy's full of crap - QED.