Yes, but it also happens in a lot of series where, a character who's characterized as someone who's bored of fighting due to how simple it is, they don't even notice the piles of bodies they create. I felt it was good defining moment of Unohana.
Also, I'd just like to point two things out. One, we've spent probably double the time Kubo has on working out how Soul Society works.
Two, Kenpachi is probably the most well rounded, sensible, nuanced, and developed character in the series. He has an actuall character arch, and it's actually a rather sad one. I vote Kenpachi for true protagonist.