It is my opinion that no one should accept an automated DMCA notice. Without human review, how can one attest to anything, especially since it is possible that fair use might apply.
Unrelated: I wonder why the textarea for posting comments on HN turn orange when you click on it? It is really annoying....
This is similar to the problem where YouTube content claims cause all video revenue to be diverted to the complainant, before any review has actually occurred and leaving no recourse to the victim. There's literally zero downsides to filing the claim, so why not do it? Why not claim everything?