Throughout the entierity of 517, all that happens is Hair Dude is a dick. In fact, the whole chapter can pretty much be summed up as "Hair dude is a dick to everyone as Beard dude tries punching him to make him behave".
It doesn't realy work.
And towards the middle part of this chapter, right when Soifon has her breakdown over how the Zero Squad be chillin through this whole invasion and only come down after everyone left and start talking shit about "rebuilding", when they could have easily prevented it with their obscene power.
Hair Dude responds my twisting Soifon's arm and then saying
Now the problem here is that, well, the palace is within a special dimension within Soul Society. Tha task of protecting Soul Society, and it's centre, the Seireitei, is in the hands of the Gotei 13.
The King's Palace exists within a seperate dimension within Soul Society.
That means that in order for the 0 Division to ever even have any sort of relevance, the G13 would have to fail in their task.
Meaning that if the G13 always overcame all obstacles as this guy says, then he and his whole division would serve no purpose.
And you know what that means ? Non judicial eternal life sentence of imprisonment without parole in a secret prison without ever having actualy commited any crime, but just due to the possibility of one day becoming a threat.
But we'll get to that in due time.