Fairness is a wide spectrum. Bitcoin is fair in any 4 year period of fixed block subsidy, and clearly much fairer than any coin with a premine, such as Ethereum

Fairness is a wide spectrum. Bitcoin is fair in any 4 year period of fixed block subsidy, and clearly much fairer than any coin with a premine, such as Ethereum's 70% or worse still XRP's 100%. Still, bitcoin is rather unfair to later generations, with each successive 20 year generation only getting to mine 32x fewer coins than the previous one. A coin allocating the same supply to each generation could certainly be said to be more fair, if not the most fair. Sadly, nearly all cryptocurrencies have followed Bitcoin's example and granted early miners/adopters a huge advantage.