Welsh, thank you for your input. So in your opinion, a neutral tag with a short explanation and a reference to this thread would be appropriate in situations like this?
Neutral tag, with a neutral tone being clear that it's not exactly set in stone, and instead highlighting suspicions, sure. I personally won't be leaving a feedback score, and would just keep this in mind in the future.
The thing with neutral tags is a lot of the times the actual content within that neutral tag (i.e the text) is rather negative, and potentially could sway the user one way another without actually investigating themselves. So, neutral tags should probably stay as neutral as possible in tone when it comes to explaining why you've left it.
I'm certainly not the standard setter when it comes to feedback though. I relatively inactive in that scene.