I really don't understand why people, especially from cryptocurrencies, are stuck up on the fact that "Game Theory" can explain everything. Human nature is fick

I really don't understand why people, especially from cryptocurrencies, are stuck up on the fact that "Game Theory" can explain everything. Human nature is fickle. Things can happen which are beyond the coded game theory assumptions, especially when everyone is aware of the rules. One of the biggest assumptions which has always been made is on the miner's side. They can't attack the network because 51% stops it. But that has proven wrong when F2pool manipulated the Status ICO: https://steemit.com/ethereum/@dhumphrey/f2pool-manipulates-usd1-2-million-on-the-ethereum-blockchain-during-the-status-im-ico https://steemit.com/ethereum/@dhumphrey/f2pool-manipulates-u... So what happens if there is a miner working in conjunction with the devs?