Rhobite stated for the record:
Wikipedia doesn't have a clear policy on the proper response to legal threats. According to [[Wikipedia:No legal threats]], legal threats against Wikipedia by editors are a violation of policy, but there does not seem to be consensus to block or ban users who engage in this practice. Nevertheless, many admins do routinely block people for making legal threats. I don't believe these blocks are justified by policy. Whether or not you believe blocking should be allowed, the policy is currently inconclusive. Maybe someone could clarify this, or if necessary, we could have a vote about it. Cross-posted to [[Village Pump (policy)]].
Legal threats are personal attacks and should be treated the same way.