The same can happen with mixers. The authorities' difficulty in closing mixers - associated with hacks - may lead them to start attacking forums, blogs or websites that promote these services.
But, when does this end? It is quite crazy as notion to shut down something because it contains referrals to other sites that might be involved in illicit activities. How do we ensure this remains at mixers and doesn't expand on, e.g., a coinjoin tutorial? In the end, coinjoins offer pretty much the same levels of privacy, if not greater.
This ban doesn't eliminate criminal activity in the slightest. It merely makes it less comfortable to mix coins, and pushes everyone to Monero and coinjoins. Not that bad as a result, but still, this whole situation is like beating the air.