I have had 27 10’s since the one 7.5. I have 104 10 reviews out of 147. Like I said i understand the math, it would be nice to go back to a 9.9 but as reviews go it’s definetly a slow decline, up to the owner how slow or fast they fall that’s all.
The rating system is definetly floored. It seems the more reviews you receive the slower your overal score is to change. I have 147 reviews with an overal score of 9.8, I have received only one score of 7,5 from an anonymous review in August 2018 and 4 review in the 8’s. Yet this 7.5 was was enough to drop me from a 9.9 to a 9.8. In September so far I have had 14 straight 10 review and no movement. I’m pretty sure it will be basically impossible to ever go back up, more realistic to actually slowly slide down.