A buyer left us this negative feedback: "Amazon is screwing me so I'm screwing you"

Amazon's support team can not remove this feedback since it does not meet any of the following criteria:

Since buyer feedback is a direct reflection of their Amazon shopping experience, we can only remove feedback for these reasons:

- Contains obscene language

- Contains seller-specific, personally identifiable information

- Entire feedback comment is a product review

- Entire feedback comment is about fulfillment or customer service for an order fulfilled by Amazon

Is this fair? What do you think?