People are doing vile things, supposedly in support of Bitcoin Core. These attacks reflect very badly on Core. Some examples:

Censoring large forums to hide the existing of other teams/clients.
DDoS'ing Bitcoin XT nodes and pools.
DDoS'ing Coinbase.
Removing Coinbase from bitcoin.org

Since these things reflect very badly on the Core team, it would be good to have a public announcement, distancing the team from such attacks and discouraging those attacks since they are not helping anyone.