I found a few other related questions, but they were in regards to flags for different reasons such as closing the question.
I flagged a question to say that all comments were obsolete. I would have flagged the comments individually, but there were several and one of them was one I had upvoted. I wasn't able to flag that one. Though, I have since found a solution for flagging upvoted comments.
The flag was declined but all comments are gone. I suppose it's possible that the two authors deleted their own comments, but I don't think that is likely.
So why was it declined? I'm wondering if this was an accident or if I was wrong to flag the question. If the latter, please explain why.