That may be great as a parallel project, but the point of this one is to take head on legally any challenges. At least that's my reading of his explanation.
He's blazing a trail that others who may be more risk averse or have more to lose can then follow. Actually blocking these domains is kind of a side benefit, especially since the most likely people to download the extension are those who could just as easily achieve the end result themselves in other ways.
Unfortunately there is no legal concept of waiver in this situation: the other side can pick and choose weak targets at will and avoid someone who will fight back. Just one more critical flaw in the DMCA system. Contrast this with trademark law where one must universally enforce the mark or risk losing it entirely.
He's blazing a trail that others who may be more risk averse or have more to lose can then follow. Actually blocking these domains is kind of a side benefit, especially since the most likely people to download the extension are those who could just as easily achieve the end result themselves in other ways.
Unfortunately there is no legal concept of waiver in this situation: the other side can pick and choose weak targets at will and avoid someone who will fight back. Just one more critical flaw in the DMCA system. Contrast this with trademark law where one must universally enforce the mark or risk losing it entirely.