But, as phorum has already pointed out, leaving a false positive is the equivalent cutting off your own nose to spite your face.

What point is there for a seller to get THEMSELVES restricted due to policy violations?

a) You leave a false positive.

b) Buyer reports you, and the feedback is removed.

c) Seller gets a policy violation against their account.

Net result = no "warning feedback" remains on Buyer's feedback, and a genuine risk of teh seller (not the buyer) being restricted.

In fact, it's actually a breach of THESE forums as well - the posts that recommend it can be reported for "Encouraging Violations"

(yes, I realise what thecatspjs wrote in post #7 above, and many others too - this comment is directed at others who are reading this thread)