On your side note; EasyList probably does not want people to start suing for starting to distribute malicious content to users (and crashing your browser on purpose is arguably malicious).
1. take the top 200 most popular websites in the given nuisance area
2. add ban rules to a version-B list that also includes all social media, search engines, and Wikipedia.
3. Look at the user-agent string for that specific problem client, or extreme apikey quota abuse
4. Randomly serve version-B filter list that breaks the browsing experience after a frequent update. Increase random breakage until traffic rolls off to normal levels.
The TOS for the ban list file does not specify which sites it will ban, and most users will just assume it is the App that is broken (it is already). People should not do this either, even if it is also funny and relatively harmless. Also, suing people while participating in an attempted crime probably would not go well. =)
Have a gloriously wonderful day =)