> FBI basically generated a shit-load of Tor nodes (https://blog.torproject.org/blog/how-to-handle-millions-new-...) for some while to increase their chances of intercepting traffic.

The blog post you link to was about a recent massive increase in Tor clients, not Tor nodes.

From what I've read I was under the impression that Freedom Hosting itself was hacked to disclose its IP addresses, rather than the FBI taking over the Tor network.