It is not impossible for bounty hunters to be paid in other currencies like BTC and ETH. There are sections on here you can get such jobs and they are open to select ranks. But I feel this not feasible for most ICOs to do considering the number of bounty participants they get and it will not encourage the circulation of their tokens
Wrong. If you're talking about whether they can or cannot pay through BTC/ETH, they definitely CAN. It is possible. However, I think it's more of an issue of liquidity. Plus, if you think about it, why would they even pay someone through the money that they got from raising fund right? It would be very beneficial to just issue tokens rather than pay with btc/eth.