Picard's condition is very close to that of a rape victim, the Borg took over his body and pillaged his mind and he was aware the whole time while being unable to do anything about it. However, Sisko is acting as if Picard either volunteered or ended up collaborating willingly with the borg. It's very close to how imbeciles nowadays or more frequently a while ago behaved toward rape victim, ostracized them even as if they were rendered "impure" by the assault. I don't understand how you can't see how close these two situations are. A rape victim once put that very accurately: "It's as if I was raped a second time in front of a whole court of law by the lawyer of that sleazebag."