Yet someone who deliberately got another user banned for posting copyrighted material is free to post the same copyrighted material here and brag about the events?
Common sense is common sense man.
There's no need to get all hostile about it. There's 3 reasons why this has not been modded (yet):
1. We don't see everything unless it gets reported, there are over 17000 threads here and only a handful of moderators.
2. It's not the task of the moderator to know wether or not posted content is pirated or just public domain if it's not hosted here.
3. Linking to copyrighted material is not illegal unless it violates our own rules (like: it violates someone's privacy).
We do sometimes mod such posts in extreme cases when we run into them, for example when people post complete siterips and all that.