Sellers haven't been able to leave negs for several years. The reason is that in the past, some sellers abused the privilege. They gave a neg in retaliation if a buyer dared give a neg.
I daresay ebay was bombarded with complaints about it.
It wasn't just an occasional problem, it was a bit of a persistent problem.
However, ebay has provided you with a way to give non payers a strike. You can also block serial non payers from buying from you.
The strike those buyers get will not be public. My belief is ebay doesn't want to upset them or do anything that would turn them off using the site.
I most definitely, if I were you, would refrain from giving any buyer a neg comment inside a positive green dot. Firstly, the buyer can get that removed if they contact ebay & secondly, you're just making the buyer look better.
