Earlier quoted context omitted.
Part of the challenge here is that "the DMCA" is a number of clauses. People who are "against the DMCA" often turn out to have an incoherent position, at least from a legal standpoint, when it turns out they just disagree with one of the contentious clauses. This would in fact be the most contentious clause, the one about being able to take down tools that enable circumvention, the one that is historically the one th…
The DMCA does make distributing circumention measures illegal, but I can't find anything in the law, or discussions of it, saying that the takedown process applies to circumvention measures. The takedown process says an ISP like Github is not liable for copyright infringement if they respond to takedown notices, which is what creates the takedown process. It doesn't say anything about circumvention measures and liabi…
Also, I agree that Easylist itself may still not be a lawsuit target. It simply makes a claim about a certain domain, it doesn't do any access circumvention itself based on that claim. But if Easylist isn't, the ad blockers using it certainly would be. And that alone would change the dynamics of the situation quite a bit.
I hate to say it because I like adblockers too, but it is frankly very likely that when the advertising industry finally makes the push against them that by current law, it will indeed turn out that it is illegal to use ad blockers on sites that take active measures to ensure you view ads [1]. Again, don't mistake me saying this for endorsing it, but I think it's a very plain and obvious reading of not just the DMCA, but even something as fundamental to our legal system as common-law contracts... if a website wishes to make viewing their content conditional on viewing an ad, they can do that, just as they can make viewing their content conditional on paying them money, joining a club, or anything else that qualifies as "consideration" [2]. They can also place further restrictions on that content as part of that content. Any argument in favor of ad blocking that would also explain why either Netflix customers have the legal right to retain copies of the movies, or in the most extreme cases, explain why everybody has the legal right to retain copies of Netflix movies, should be discarded as an argument that proves too much [3].
I'd suggest the ad blocking community and the interested tech community at least wargame out the plan for if they lose the legal cases, because I would personally put that at somewhere around 90% probability if any of them ever go to court. Even with the EFF supporting it, I fear the EFF would pretty much be reduced to making very handwavy arguments about fundamental rights and basically pounding on the table, because in my considered opinion they really won't have much else. And even if they are correct, courts tend not to take much account of those arguments.
[1]: If the judgment goes really bad, it could even be illegal to bypass sites that don't try anything explicit. However there is a very good argument here that there is a history on the internet of assuming more rights rather than fewer if you don't assert yourself, such as the fact that browsers generally render things differently anyhow, the long history of search engines, the needs for accessibility software to render pages fundamentally differently anyhow, etc. I think there's a good chance no judge would want to overturn that consensus as it's now around 25 years old.