Their request is here: https://github.com/easylist/easylist/commit/1ba8d4afeec6d562...
And was made by this account: https://github.com/dmcahelper
So, they made a github account the same day they made the "request" with an account that in no way indicates where the request is coming from? The github profile bio reads "Help all parties understand and resolve DMCA issues efficiently and effectively to minimize file and repository impacts."
Perhaps they should have used a bit more transparency when asking for the offending url to be removed from the repo, instead of acting like a spammy copyright boogyman, then immediately resorting to a dubious DMCA takedown request.