Yeah, I found it to be pretty incongruous with how good Selune is meant to be portrayed in the game. I get that in a setting like Faerun a ritual like that wouldn't be seen as especially cruel (it's intense but it's not like there are traps or anything set up to make them fail) but it also doesn't really seem thematically in line with Selune. If she were some nature goddess then sure, but that's not really her vibe. It also makes very little sense how that's not commented on as a point against Selune. Shadowheart doesn't call it out as evidence of Selune being actually wicked or hypocritical, which would be totally reasonable.
Apparently her parents are werewolves so maybe it's a thing where the children think they're going out alone but the werewolf members of the community are always there keeping an eye on them, making sure they're not in any danger. I could see that working really well in fact because A) it proves a distinction between Shar and Selune, where Shar wants you to lean fully on her and rely on her so that she can weaken you and make you vulnerable, while Selune wants you to be self-reliant but still provides a safety net so you can grow in relative safety and B) that could serve as a point of conflict for Shadowheart, she could resent having to go through that trial, not knowing she was in no danger, and having that be a source of anger against Selune that she can address when she learns the truth. But as is, the game really doesn't even seem to think there's anything notable about this rite of passage, and it's also apparently common enough that a history check can figure it out, without there seeming to be any indication that it was something done by just a specific community, which is the only way the werewolf thing would work out.
