I really don't think Larian is trying to actively teach any moral lessons with the game. They have their own perspectives that are appearing in the story, but that happens with every story. But I do find it baffling why they turned that druid immortality thing into a ritual when it's meant to be just an automatic thing that happens. However in defense of Karlach not asking for the ritual to be done to her, the way it works is that druids are ageless, but they can still be killed. So it wouldn't fix the engine. And doesn't Jaheira say that it's a thing for old druids anyway? I've only seen the scene once so I don't remember it very well.
