Possibly because if anything is, this is a legitimate claim. Ignoring the "it's a tool to circumvent DRM" nonsense (which is a "legitimate" claim under the DMCA

Possibly because if anything is, this is a legitimate claim. Ignoring the "it's a tool to circumvent DRM" nonsense (which is a "legitimate" claim under the DMCA). The repository itself is pirated code - it is code held under copyright by google, and google doesn't want it to be public, therefore anyone distributing it is violating copyright. The DMCA claim is substantially less than what they could do. Actual copyright violations have very large fines.