I'll put in my 2 cents.
Ethereum is a Decentralized Network
Ethereum utilizes their token in order to pay for actions or computation on the network. This is what gives it value (much like a currency).
Inflationary Currencies are not Inherently Evil
Although the currency will continue to inflate by small amounts every year. This will be a far cry from the inflation we are used to seeing (and thus believe are evil). No one person or small group will have control on how much this inflation is. We will not have a FED that just prints more USD.
Ethereum and Steemit are both Independently Awesome Decentralized Systems
Both seem to have some really cool use cases and I do not see them directly competing with eachother (yet). At some point in the future there could be a social dapp that comes from Ethereum, but I would not expect it to pickup much steem (hehe) unless it sets itself apart from the same model.