This is true because Ethereum platform was commonly used by most of the ICOs to support their project tokens and that is why MEW is become famous too which means that they trust Ethereum as it was the most convenience to use too because of its ERC20 standard. Ethereum will become more famous to ICOs if Vitalik Buterin will become successful to improve the transaction speed of up to 1million per seconds in which it will become totally a user friendly to all Crypto enthusiast.