Blockchain might grow to next mt.gox
Somehow they manage recent shut down, so I guess it is fine.
Who is "they"? Blockchain is not a person, or a company, or a website. It's a piece of data distributed all over the world by hundreds of thousands of Bitcoin users. Nothing is shut down.
So yes, indeed it's fine.
How the hell anyone would compare this system to MtGox is beyond me. You might as well compare it to french cheese. Makes no sense either.