Eh DS9 was a Bajoran space station. As such it's prejudice for Siskoto allow Bajorans who call everyone who doesn't believe in their gods infidels, but prohibit Worf from carrying out a ritual with a family member. Also keep in mind Klingons are apart of the Federation. The Bajorans are not. Part of being in the Federation is accepting all cultures, races and customs as they are. Sisko seemed unfairly critical of Worf because the act was view as murder rather than ritual. In the same breath saying he allows cultural diversity to an extent. He seemed to forget Bajoran's racist views of Cardassians. To my knowledge he has never once tried to curtail or persuade Bajorans from thinking or acting that way against them. Hypocrite. If Sisko had walked the Picard line and made his criticism of Worf's actions purely and infringement of StarFleet protocol then I would overlook this. But Sisko didn't and got personally involved in a matter. No different than a Captain in a navy allowing orthodox Jews free reign to do whatever but marginalizing atheists because they don't adhere to the sabbath.