THIS. Why would the feds take SR down immediately after deanonymizing it? Then everyone of the vendors using it would get away and they would blow that they can trace hidden services. It would be far more likely that they would sit on top of it waiting for vendors to use their entry nodes and then deanonymize them with a timing correlation attack. maybe after gathering intelligence on vendors in this way for half a year, not to mention all the unencrypted addresses passing through the server, then they would take the server down immediately before doing an Interpol coordinated operation.