As to the organ redundancy thing. I never liked it. It was just another one of those convenient trappings that gets swept under the rug when it is no longer convenient, kind of like transporters being able to keep Scotty alive for 80 years until recue & medical aid can arrive. That would seem to be a handy thing to keep exploring
That is one of the more interesting scenes in the whole episode IMHO. It further illustrated to me just how much greater Picard's tolerance & even sympathy for the Klingon way of life is, than just about every other person on the show, which is one of a very few rare instances where he & I disagree (Like relegating whole intelligent species to go extinct, cuz directive reasons)
Ultimately I just don't get it. No one is telling Worf he has to live among people with such widely differing ideals. He chooses that each day he does so, swears allegiance to it as an officer even. I've never even seen the guy in a relationship with a fully Klingon woman. K'Ehlery clearly didn't adhere to Klingon values. She didn't raise their son with a respect for them. He engages in relations with Deanna & even has children in an alternate reality. Can we really expect he'd be staunch about Klingon values with them? How could he even?
How is it not appropriate to just tell this guy that he's made his bed, & getting accustomed to adhering to all these other... customs, that aren't like his homeworld, is just a fact of life for him? Heck, it's not even a homeworld he ever really lived on for any length of time. He was raised by humans & continues to live among them. He's estranged from it, for all intents & purposes, which always came off to me to be a lot of overcompensation, whenever he tried to play the Klingon card, like the real person he was trying to convince was himself
Maybe people ought to be telling him to table that chip on his shoulder & accept that he is the one choosing to live outside of the Klingon lifestyle & that means adapt or go back there. I can count numerous times that being exposed to non-Klingon ideals has served him quite well actually