We cannot truly call them scam sincr theirs no bad stolen claims against yet and the only one i see is those unprofitable issue who have been splash at them and also we can't call them legit yet since as far as i know that mining business is not truly profitable right now and its up to the people/investor if they will choose to invest on this kind of scheme and they must know the risk since and know on how investing on cloudmining will be worth to them.
Maybe you can use interpunction in the future?
Legit? = they are truly mining. You can visit them to see the mining rigs. So, yes they are legit.
Profitable? = that's a different story. And with every investment it's good to look into it before investing. And there's enough information available about their contracts - also on this board.