If the guy had never talked to the press at all... you think the FBI and DEA would have just ignored a massive drug marketplace running essentially out in the open?
I think the point here is that, even though the letter agencies would not have ignored it... they surely got a lot more "incentives" internally to focus on SR when it got more mainstream attention. More analysts, more easily approved wiretapping/surveillance actions (not that they need approvals of any kind nowadays), essentially more money into it.
People slip, it's inevitable. How fast that happens probably got accelerated by SR's owner appearances and the dent it was making in the agencies' reputation.