I was thinking about the same as you right now. I was also looking what the reading system is giving now, and it seems to be points, so there's never coins in the equation.
The fast pass is great for reading chapters with a very high cost, but all in all, it's practically nothing what we receive. In the end, it limits our freedom to decide which novels we read and focus on those. Because they're all the same now, it went to the point of "now you won't read any" instead.