This is a good point, there is a big difference between equality and equity. People often try to use equality as a weapon, and deliberately ignore the all the advantages they've previously had.
Fairness is always going to be subjective, especially when it comes to Hive rewards. I try to think about value to the blockchain in my voting. I've definitely seen authors who write multiple times a day, but they're really just variations on the same couple of themes rewritten slightly differently, and I personally don't think that adds a lot of value... but they get autovotes and don't care. So I try to think more in terms of quality rather than quantity myself.
When I write, I try to think of the value it could bring to the network because I think that's how Hive can set itself apart from the rest of the internet.