Even though I am not a fan of Ethereum at all, we should not avoid ETH just because a lot of scams happen on it. That is like avoiding Bitcoin or fiat because drug dealers and child pornography use them as payment. The reason so many scams happen on ETH is just that it is so easy to create an ERC20 token. You have people now just selling services, to create a token, whitepaper, logo, signatures and all that in a week.
Well, if I make double the BTC equivalent in ETH from Bitcoin mining, I might consider ETH services again. But, I will always remember getting taken on the ETH platform. Many others certainly have been left with that feeling too.
It would be best for those who founded ETH to spend some of what they've made on coming up with a recognized coalition of technical and financial advisors who could review ICO's and certify the ones they find to be reliable on their whitepapers and claims. That would certainly help in giving more credence to ICO's.