Besides the dual stream confirmation in Discovery, I believe it's in Enterprise that we first learn that Klingons have two of every organ.
And I believe I recall a throw away line of confirmation (of the double organs) in Picard.
I'm honestly surprised if Lower Decks hasn't dealt with the topic yet.
Let's not defederate from every corporate player. Some of them can probably respect reasonable rules of civility.
But fuck Meta. We already know how this plays out.
We know there's a huge wave of hatred and misinformation incoming. We've seen it on their other platforms.