If you look at the revision history, there's no special magic going on here, the question was closed and then reopened by the moderators. Specifically, I reopened the question since it doesn't really seem opinion-based at all. It's asking for an apparent contradiction that a user saw between a character's actions when compared to what they know (or think to know) about the rest of the character's background. It explains why they think it was unusual for Lisa to become Buddhist when looking at her character. That seems a common character-motivation question asking for explanations based on the TV-show, rather than asking out of the blue why she wouldn't convert to anyone's favourite religion.
Though, I usually try to leave a comment under the question when correcting a review mistake like that, but the question was reopened so quickly, that I just deemed it better not to spotlight the closure too much and confuse the asker with why people closed their question. But in light of the downvotes it's gathering, for possibly the same reasons, it might have been a better idea to make a case for the question in the comments.
Like you said, the review queue is for reviewing questions for closing and sometimes reviewers can disagree or err. The comment flag you issued didn't have much to do with that (other than indirectly making me aware of the question's closure). In fact I deemed the comment flag valid once another comment arrived that proved the prognosticated discussion that would appear reality.