User blog comment:Xilinoc/Ch. 572 (inb4 "Kenpachi doesn't have Shikai")/@comment-8669536-20140312104353/@comment-5693502-20140312120158

He's definitely not stupid, he just prefers to slash first, have fun slashing and then think about the consequences later. Violent brute, yeah sure that can't be denied.

I would agree though, Zaraki turning up was an anti-climactic end to the chapter. I personally didn't want Zaraki to show up until later...