How is something subjectively accurate? I mean you seem an okay guy that is serious question not me taking the piss. How do you confirm it is accurate if it is subjective? I mean what criteria is there. I mean that leaves this open to anything really and reduces its value to zero if we all exercised it to the max without it being abuse.
I've been using the term subjectively accurate meaning that its a reasonable statement. One could follow the train of thought that lead someone to make their claim, even if they don't necessarily agree. Everyone is going to see a situation differently, but as long as a real good faith effort is put into leaving feedback, I don't see any problem with it.
If someone was harassing me for example, at what point is it harassment, and at what point is it just annoying, a joke, or all in good fun? If 99% of people think its all in good fun, and I'm taking it as harassment, its likely that I'm overreacting and negative feedback wouldn't be appropriate. Switch that to 99% think its harassment and 1% think its a joke, its probably justified for a negative as harassment. The times where its 99% one way and 1% the other way, there isn't a need for discussion, it is what it is. That is the exception though, you don't see a thread often about a confirmed scammer disputing their negative feedback, or someone who got negative feedback out of nowhere. When opinion may be split 50/50, I don't think its worth suppressing information that 50% may want to know before deciding to trade with someone.
My point is that if someone leaves feedback because they strongly believe that something is wrong, I don't think thats abuse. Thats what feedback is for. As long as the feedback is not misleading, its up for individuals to judge its validity. The 50% who disagree with the claim and the proof provided are free to ignore it.
*edit* And again, I haven't looked at the claim against you, I'm just speaking generally how I think feedback should be handled on subjective topics.