Do you think Worf did the right thing in Birthright or should he have minded his own business and left well enough alone?
As the community was mostly happy enough as it was and had lived in harmony before his arrival, I think he should have left well enough alone.
He took the view that there's only one "right" way to be a Klingon, which makes me roll my eyes. If the Klingons in this community had been in misery and obviously suffering, his actions would have been more understandabke, but they were not, so I see his actions as meddling where help had not been asked for.
I couldn't disgree with you more.
'Suffering' does not exclusively mean pain. Just because the Klingons on the planet aren't being beaten daily doesn't meant hey aren't suffering.
I think Worf does the right thing by 'lifting the veil' on such a toxic state of affairs. The children are being lied to, not jsut about historical facts but also about their own culture and society. It's one huge case of Stockholm Syndrome that has gotten way, way out of hand.
No matter how it is dressed up, those Klingons are living their lives in a prison. There are armed guards, concrete walls and they are being fed a propaganda in order to control them and suppress any desires for rebellion. It is as fictional a state as one can imagine.
To state that the 'community was 'happy enough' is misguided. I'm sure there were many slave plantations where things were relatively docile but it doesn't mean that makes the situation in which people are living 'ok'.
The only issue I have really is, as you say, that Worf continues to paint his rosy portrayal of Klingon society which is not entirely true. If one were to take Worf at face-value, you would think the Empire couldn't probably have deceit and corruption which, as we know, it does. Still, I think he is well within his right to tell the children that they are being lied to, that they are prisoners on a colony and to also give them the chance to leave.
*Edit*
I also think the poll is scewed. 'Klingons must be warriors' is not the point Worf is actually making. It is 'people have the right to know the truth of their heritage, culture and have the right to explore it. Boiling it down to simply 'Klingons must be warriors' is patronising to the bigger issue he is attemtping to tackle. I.E that they are living in a prison.