My issue is that Sisko took Worf's act as a personal offense. When Sisko himself is a religious figure and spiritual man himself. Its wasn't a violation of starfleet protocol that caused Sisko to judge Worf. t was the act was viewed as premeditated murder in his eyes. Like I said had Sisko walked the Picard line and remained unbiased in his reprimand I could except it but he didn't.
Chewing out Worf for the attempted murder/assisted suicide was hardly a unique event. The drill instructor act seemed to be Sisko's preferred method of dealing with issues of military discipline. It probably shouldn't be seen as personal offense. Picard seemed to prefer the disapproving father figure routine, and that's fine, but it's not the only valid approach.