How does quoting a passage where they assert copyright ownership over one thing imply that they did not also assert copyright ownership over something else?
> What files should be taken down? Please provide URLs for each file, or if the entire repository, the repository’s URL. ... https://github.com/noDRM/DeDRM_tools
> the content of the repo was illegally obtained. The repo and its forks must be shut down entirely.
> I have a good faith belief that use of the copyrighted materials described above on the infringing web pages is not authorized by the copyright owner, or its agent, or the law.
> I swear, under penalty of perjury, that the information in this notification is accurate and that I am the copyright owner, or am authorized to act on behalf of the owner, of an exclusive right that is allegedly infringed.
In addition, the larger context of a DMCA Takedown Request is to assert expedient takedown of a copy of work that you have copyright ownership over. Adding a bunch of backpedaling filler to a DMCA Takedown Request does not alter its basic purpose.
edit: Sheesh it looks like Microsoft is actually encouraging claimants to write these fraudulent DMCA notices regarding circumvention technology [0]. So this is basically another extralegal "Content ID" process, and Microsoft being overzealous with takedowns makes them a terrible option for hosting your stuff. I'd love to see the law produce some justice here for once, but the real answer to these corporate-bought one-sided laws is IPFS and the like.
No they didn't:
> "We are the copyright owner of the official LCP encryption profile used by ebook distributors worldwide"