Lower Decks did, in one of the earlier seasons. The episode with the visiting drill instructor Tendi has a test where she has to give a Klingon an honorable death. She fails and her holo-assistants also fail to kill the Klingon because of all the backup organs
And also why mother Klingons carry their young by gripping the loose skin on the back of their necks... no wait, I'm confusing Klingons with something else, aren't I?
It's in the title of the post. Canon would be if something would be verified in the Star Trek universe. Which this is, sure, but think about it: it's much more likely to be a comment on the girth and power of Klingon instruments