[tor-talk] Did the FBI Pay a University to Attack Tor Users?

[Soul Plane]

There's an interesting article on the Tor Project's blog today that asks
that.
https://blog.torproject.org/blog/did-fbi-pay-university-attack-tor-users

Is this a problem that can't be stopped, these relays that may join the
network in an effort to de-anonymize users? Can anyone still flood the
network with tons of relays? Though the relays that were identified were
removed wouldn't someone persistent just learn from that and differentiate
more?