Ethereum platform is widely used in different bounty campaigns that’s true. However you can simply invest in ETH and trade it in crypto market and never take part in all those new projects that can scam any moment and leave you without your investments. You can even trade BTC and have all your pinvestments in BTC and in any moment convert BTC/ETH, create ERC-20 wallet and join some project. Everything depends on your inner desires: just to trade (that is risky by itself) or to take part in some projects and to risk more.