The headline on the article should reflect the fact that Microsoft/Github pulled youtube-dl offline by choosing to respond to a DMCA takedown order that is not procedurally valid. The privatization of law enforcement through DMCA takedown orders does not extend to alleged circumvention tools; it includes only copyrighted material that is allegedly 'pirated.'
The RIAA is engaging in an abuse of process that Microsoft has no obligation to cooperate with. The fact that Microsoft didn't tell the RIAA to go Disney themselves means that 100% of the blame lies at Microsoft's feet. No exceptions.
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That said, the youtube-dl maintainers should file a bar association complaint against the RIAA lawyer(s) who wrote the DMCA takedown. Filing invalid motions is an ethical violation that should result in sanctions.
