This was predicted around a month ago, after the release of the tool that detects routers acting in the Great Firewall. [1]

But I'd assume you'd just Streisand Effect the project if it was closed down, almost inevitable once mongol was released, it'd just be forked.

Unless the block was a culmination of other factors that I don't know about, then I'd love to hear more.

[1] https://github.com/mothran/mongol/issues/1