Yes, I have been stung by guests not leaving reviews, and it's definitely unfair. I have high ratings overall, and a unique property for my area, and it's not right that I get punished when the guest stay has been more than taken care off. eg. My last guest came without their supplies, and I drove them all over the pueblo to pick up groceries. The caretaker cleaned their SUV, inside and out. When they got a flat tire, he changed the tire, and took the tire to get repaired.
As a guest, hosts haven't left reviews when they haven't lived up to their promises on their property.