Other weirdness in the commit log for that event: https://github.com/easylist/easylist/commit/1ba8d4afeec6d562... .

Not finding much else, except they do appear to be hosting ad-block detectionn ( https://unknowntray.com/4430b41e83ded20e5f99d3149b838ba9394d... , ref: https://forum.adguard.com/index.php?threads/resolved-venture... ).

Are they DMCAing about blocking ad-blocker-blockers being a tool to "circumvent copyright access controls"?